Best Accounting Software for Engineering Firms in 2026
Short answer: QuickBooks Online Plus is $140 a month at list price and is the entry plan with job costing, project profitability, and progress invoicing for a small engineering firm. Only 5 users can post transactions, but time-tracking-only users do not count against that limit. BigTime starts at $20 per user per month when timesheets need cost and billing rates. Xero Established is $97 a month with no per-user fee. Sage Intacct and Acumatica are custom quotes for firms that need project accounting inside the general ledger.
An engineering firm earns its margin on labor, subconsultants, and unbilled work. Buy the file that shows all three by project before the month closes.
Most small engineering firms should keep QuickBooks Online as the ledger and add a time and billing layer, not replace the books with a project tool. The ledger has to do three things a generic small-business file does not: cost each project's labor, carry subconsultant bills through to the invoice, and show unbilled work before the month closes. Toolradar data: only 9 of the 270 accounting tools we track are free outright, and 71% are paid-only, so a firm that needs project costing should budget for a subscription.
This ranking is for civil, structural, MEP, and consulting engineering firms in the US that bill a lump sum, time and materials, or a not-to-exceed fee. A practice that sells design by phase should read the architects guide. A firm that also holds construction contracts should add the construction accounting guide, and a solo consulting engineer can start with the consultants guide.
QuickBooks is the ledger most outside accountants already know, which is why it leads. BigTime is the time and billing layer that pairs with it. BQE Core, Deltek Ajera, Deltek Vantagepoint, and Unanet are the A/E specialists engineering firms get pitched most, and each routes pricing through a quote or demo request, so they sit outside the ranking. Every other ledger is in the accounting catalog. How we ranked: these 10 were set beside the 270 accounting tools in the catalog for a firm that costs labor and subconsultants by project. Prices were read on vendor sites on October 4, 2026.
Top Picks
Picked by editorial review, informed by G2 and Capterra review volume and rating and by media mentions, the signals behind our category rankings. How we rate
| Tool | Starting price | Rating | Best for |
|---|---|---|---|
| QuickBooks Online | From $140/mo on Plus | 4.4 405 reviews | Small firms whose outside CPA closes the year in QuickBooks. |
| BigTime | From $20/user/mo | 4.5 1,923 reviews | Firms that keep QuickBooks as the ledger and need timesheets, billing rates, and invoices by project. |
| Sage Intacct | Custom quote | 4.3 4,086 reviews | Firms with several offices or entities that need overhead and WIP reporting in the ledger. |
| Acumatica | Custom quote | 4.4 1,998 reviews | Firms that want project accounting, time, and billing on one ERP with unlimited users. |
| Xero | From $97/mo on Established | 4.4 5,158 reviews | Small firms whose CPA signs Xero and that want projects without a seat fee. |
| Zoho Books | From $40/mo, billed yearly | 4.4 1,009 reviews | Firms already in the Zoho ecosystem that want projects at a lower price than QuickBooks Plus. |
| FreshBooks | From $70/mo on Premium | 4.5 5,507 reviews | A licensed engineer who bills hourly or by retainer and does not employ staff. |
| Kantata | Custom quote | 3.1 2,904 reviews | Firms that staff projects across disciplines and offices and run resourcing from one system. |
| NetSuite | Custom quote | 4.1 6,995 reviews | Firms with multiple entities or offices that need ERP-grade consolidation and project accounting. |
| Replicon | Custom quote | 4.4 1,331 reviews | Firms whose gap is time capture and estimated-versus-actual project costing. |
Small firms whose outside CPA closes the year in QuickBooks.
- Pro: Plus includes job costing and project profitability reports, and Intuit documents progress invoicing and a work in progress report on Plus and Advanced, so a lump-sum job can be billed by percent complete and checked against its estimate.
- Pro: Plus allows 5 billable users and 2 accountant users, and time-tracking-only users do not count against the billable limit, so engineers can log hours without a seat. Advanced allows 25 billable users and 3 accountant users.
- Pro: Advanced adds construction financials, which Intuit lists as job costing, budget-versus-actuals monitoring, AIA-style invoicing tied to phases and milestones, change orders, and WIP reporting. That fits a firm that subs to architects or contractors.
- Con: Plus caps the chart of accounts at 250 and classes and locations at 40 combined. A firm that tags offices, disciplines, and project types can reach those limits, and Advanced at $340 a month lifts them.
- Con: New customers get 50% off for 3 months, then the list price applies. Essentials at $85 and Simple Start at $38 have no projects, so neither can cost a job.
Watch out
50% introductory discount expires after 3 months, doubling your bill overnight
Firms that keep QuickBooks as the ledger and need timesheets, billing rates, and invoices by project.
- Pro: Essentials starts at $20 per user per month and includes time and expense, project portfolio management, billing and invoicing, and a QuickBooks integration.
- Pro: BigTime describes fixed fee, time and materials, milestone, and retainer billing, plus a view of unbilled time and expenses, so the invoice follows the contract method.
- Pro: Premier adds project budgeting, custom cost and rate management, multi-level approvals, and a Sage Intacct integration, which is the upgrade path when the firm outgrows QuickBooks.
- Con: Only the Essentials rate is published. Premier, the tier with project budgeting, has no price on the page, so a budget requirement cannot be priced until BigTime quotes.
- Con: BigTime is not the general ledger, so the firm still pays for QuickBooks or another ledger. The pricing page also does not say whether the $20 is billed monthly or yearly.
BigTime's Essentials tier at $20 per user/month offers a fair starting point for core PSA functionalities, especially with the inclusion of an AI Assistant.
Watch out
Potential DCAA compliance add-on cost
Firms with several offices or entities that need overhead and WIP reporting in the ledger.
- Pro: Sage describes project costing, invoicing, and billing on time and materials, fixed fee and milestones, or percentage completion, so each contract type has a billing rule.
- Pro: Revenue recognition can post by milestone, schedule, or percentage completion, and Sage says the billing schedule is separate from the revenue schedule. That fits a lump-sum job billed on a calendar.
- Pro: Dimensions tag transactions by location, department, project, customer, vendor, employee, item, and class, which is how an indirect-cost pool by office or discipline gets built without a bloated chart of accounts.
- Con: Sage prices by quote, based on firm size, users, and modules, so there is no published seat price to set beside QuickBooks Plus.
- Con: It is a finance project, not a plan change. Expect to map projects, rates, and history before the first close in the new file.
Firms that want project accounting, time, and billing on one ERP with unlimited users.
- Pro: Acumatica launched a Professional Services Edition in October 2024 for engineering, architecture, and IT consulting firms. It bundles Core Financials, CRM, Payments, Project Accounting, Project Management, and Time and Expense.
- Pro: The 2025 R2 release added WIP reporting for percentage-of-completion billing and a web timer for project labor that feeds payroll and project accounting.
- Pro: Pricing does not charge per user. Acumatica says cost follows the applications you run, usage and resources, and deployment, so a 40-person firm does not multiply a seat fee.
- Con: No dollar price is published. Cost depends on applications, transaction volume, storage, and deployment, so every figure arrives through a quote.
- Con: Resource management in the edition comes through a partner product, ProjectManager, so staffing is a second vendor relationship.
Small firms whose CPA signs Xero and that want projects without a seat fee.
- Pro: Established tracks time and costs for projects, compares costs with a budget, and sends fixed-price, time-and-materials, and progress invoices, including deposits and lump sums.
- Pro: Xero charges no per-user license fee on any plan, so adding a principal or a project manager does not raise the organization price.
- Pro: Every plan includes W-9 and 1099 management, which covers contract engineers and subconsultants. New customers get onboarding help from a product specialist for the first 90 days.
- Con: Growing at $59 a month leaves out project tracking, multi-currency, and employee expense and mileage claims. Early at $27 stops at 20 invoices and 5 bills.
- Con: New US customers get 80% off for 3 months, and $97 is what renews. Xero's project page does not describe a percent-complete billing method, so confirm yours in the demo.
Watch out
Potential add-on costs for specific integrations
Firms already in the Zoho ecosystem that want projects at a lower price than QuickBooks Plus.
- Pro: Professional introduces projects, timesheets, multi-currency, and purchase and sales orders, with 5 users included, at $40 a month billed yearly or $50 month to month.
- Pro: Premium at $60 a month billed yearly, or $70 month to month, adds budget management, cash flow forecasting, and fixed assets for 10 users.
- Pro: 1099 e-filing starts on Standard at $15 a month billed yearly, which covers contract drafters and subconsultants.
- Con: Projects and timesheets are not on Standard, so the $15 plan cannot cost a job.
- Con: Each added user is $3 a month, or $2.50 billed yearly. The pricing page lists projects and timesheets and does not list WIP reporting, so ask for a demo of a lump-sum job billed by percent complete.
Zoho Books is the best value in cloud accounting.
Watch out
Additional users cost $2.50/user/month on top of plan price
A licensed engineer who bills hourly or by retainer and does not employ staff.
- Pro: Premium at $70 a month adds project profitability and unlimited billable clients. Plus at $43 includes accountant access, double-entry reports, client retainers, and unlimited proposals.
- Pro: Lite, Plus, and Premium all include unlimited time tracking, unlimited estimates, and automated recurring invoices, so hourly work and on-call retainers have a billing path.
- Pro: New customers can take 80% off Plus and Premium for 3 months, and Lite is advertised at $1 a month for the first year. The list price renews after that.
- Con: Lite stops at 5 billable clients and has no accountant access or double-entry reports. Plus stops at 50 billable clients and has no project profitability.
- Con: Each additional user is $11 a month, and the plan pages list no WIP report, overhead rates, or subconsultant tracking, so a firm with employees outgrows it.
FreshBooks' pricing is fair for small businesses, though it can become expensive as client numbers grow.
Watch out
Potential for add-on service costs
Firms that staff projects across disciplines and offices and run resourcing from one system.
- Pro: Kantata positions itself for professional services and engineering firms, with delivery, resourcing, and financials in one platform.
- Pro: It cites more than 1,200 prebuilt connectors, which matters when project tools, a CRM, and a ledger all have to agree on a job number.
- Pro: Plans are tailored to company size, goals, and working style, with a PSA advisor assembling the quote, so scope is negotiated rather than fixed.
- Con: No price is published, and the form routes you to a PSA advisor, so Kantata cannot be compared with a published seat until the quote arrives.
- Con: Kantata is not a general ledger, and the pricing page does not say which accounting syncs come with which package, so name your ledger on the order.
Kantata's 'Enterprise' tier, with its custom pricing, is likely expensive given the comprehensive suite of features targeting large professional services organizations.
Watch out
Implementation and onboarding fees probable
Firms with multiple entities or offices that need ERP-grade consolidation and project accounting.
- Pro: Oracle sells SuiteProjects and SuiteProjects Pro as professional services automation that covers project billing, time tracking, expenses, and accounting.
- Pro: OneWorld manages multiple subsidiaries and legal entities in one system and automates intercompany eliminations and consolidation.
- Pro: Pricing is an annual license built from the core platform, optional modules, and the number of users, so who needs access drives the bill.
- Con: NetSuite publishes no price, and a one-time implementation fee sits on top of the annual license, so first-year cost is a quote plus a project.
- Con: It is more system than a 15-person firm uses, and seat-based pricing penalizes broad timesheet access.
It's best suited for growing businesses that require a comprehensive, integrated ERP system and can absorb the higher initial costs.
Firms whose gap is time capture and estimated-versus-actual project costing.
- Pro: Replicon, now part of Deltek, captures billable and payable hours with timesheets that pull time from more than 100 work apps.
- Pro: Project costing compares estimated and actual budgets, so a project manager sees an overrun before the invoice goes out.
- Pro: It integrates with existing ERP, CRM, payroll, and project management systems, so it can sit in front of the ledger a firm already runs.
- Con: Pricing is not published. Deltek asks you to contact them for a quote.
- Con: Replicon is a time and costing layer. It does not produce the general ledger, the tax file, or the bank reconciliation.
What accounting software for an engineering firm actually is
Engineering accounting software is a general ledger that knows what a project is. It ties timesheets, subconsultant invoices, and reimbursable expenses to a job number, bills the client under the contract's method, and reports what the firm has earned but not yet invoiced.
That last number is the one a generic file hides. An engineering firm usually bills a lump sum by percent complete, time and materials at a rate schedule, or a fee capped at a not-to-exceed amount. Each method opens a gap between work performed and dollars invoiced. A ledger that cannot show the gap leaves the principal guessing at month end. Principals also watch the multiplier, which is revenue divided by direct labor, and the ledger should make that number visible by project.
The ten products below split into two groups. QuickBooks, Xero, Zoho Books, FreshBooks, Sage Intacct, Acumatica, and NetSuite are ledgers, the file an outside CPA signs. BigTime, Kantata, and Replicon sit on top of a ledger and handle time, resourcing, or project costing.
If the only gap is the timesheet, read the time tracking guide. If you only need to send bills, the invoicing guide is shorter.
Why the entry plan fails the first project review
The project report sits one plan above the entry price in every ledger on this page, so the cheap subscription is the wrong purchase. QuickBooks puts job costing and project profitability on Plus and Advanced only, and Essentials at $85 a month has no projects. Xero tracks time and costs for projects on Established at $97 a month, and Growing at $59 does not. FreshBooks limits project profitability to Premium at $70 a month, so Plus can bill a project and still hide its margin. Zoho Books starts projects and timesheets on Professional.
The second trap is the seat count. QuickBooks Plus allows 5 billable users, and Intuit's usage limits do not count time-tracking-only users against that number, so a 20-engineer firm can stay on Plus when only the office manager and two principals post transactions. Plus also caps the chart of accounts at 250 and classes and locations at 40 combined. A firm that tags every office, discipline, and project type can reach those walls before it reaches the seat limit. Advanced is $340 a month and lifts them.
A time or PSA tool does not solve either problem alone. BigTime, Kantata, and Replicon can price a timesheet and support an invoice, and the tax return still comes from the ledger. Compare the two leading ledgers on QuickBooks vs Xero before you commit the firm's history to one.
Key Features to Look For
Job cost by project, with labor at cost (Essential)
QuickBooks Plus and Advanced include job costing and track labor, payroll, and expenses by project. Xero Established links costs to a project and compares them with a budget. Zoho Books starts projects and timesheets on Professional, and FreshBooks reports project profitability only on Premium.
Billing methods that match the contract (Essential)
Lump sum by percent complete, time and materials, milestone, and not-to-exceed are different invoices. QuickBooks lists progress invoicing on Plus and Advanced. Xero sends fixed-price, time-and-materials, and progress invoices. Sage Intacct bills time and materials, fixed fee, milestones, and percentage complete.
WIP and over or under billing (Essential)
Work in progress is earned revenue minus invoiced revenue, by project. Intuit documents a work in progress report on Plus and Advanced. Acumatica's 2025 R2 release added WIP reporting for percentage-of-completion billing, and Sage Intacct can post revenue by milestone, schedule, or percentage complete.
Time that carries a cost rate and a billing rate (Essential)
A timesheet has to price the hour twice: once at what the engineer costs and once at what the client pays. BigTime Premier adds custom cost and rate management. QuickBooks updates labor cost automatically when paired with QuickBooks Time or Workforce. Replicon captures time from more than 100 work apps.
Subconsultant bills and reimbursables on the invoice (Important)
Surveyors, geotechnical firms, and specialty engineers bill you, and the contract often lets you pass that cost through with a markup. The bill has to carry the project number when it is entered, or the next invoice leaves it out. Xero and QuickBooks both attach costs to a project, so test one sub bill from entry to client invoice.
A seat model that fits a firm where few people post (Important)
QuickBooks Plus allows 5 billable users plus unlimited time-tracking-only users, and Advanced allows 25 billable users. Xero charges no per-user license fee. Zoho Professional includes 5 users, then $3 per added user. FreshBooks adds $11 per person, and BigTime charges per user.
Links to the tools that run projects (Important)
BigTime lists a QuickBooks sync from Essentials, Salesforce and Jira on Advanced, and Sage Intacct on Premier. Kantata cites more than 1,200 prebuilt connectors. Replicon integrates with ERP, CRM, payroll, and project management systems. Ask each vendor to show your own project tool feeding the job number.
Dimensions and indirect cost pools (Important)
An overhead rate is indirect cost divided by direct labor, and public agencies that pay on cost-plus contracts can ask for an audited rate. That needs indirect costs coded by office or department. Sage Intacct dimensions include location, department, project, and employee. QuickBooks Plus shares one cap of 40 classes and locations.
What to settle before the demo
If an outside CPA closes the books in QuickBooks and fewer than 5 people post transactions, price QuickBooks Plus first. Add BigTime Essentials only if timesheets and billing rates are the gap.
If more than 5 people must post, or a subconsulting contract requires AIA-style pay applications, price QuickBooks Advanced at $340 a month. Intuit lists AIA-style invoicing tied to project phases and milestones on that plan.
If you want projects without a per-user fee and your CPA signs Xero, price Established at $97 a month. Growing at $59 has no project tracking.
If public agencies pay you on cost-plus contracts, or the firm runs several offices as separate entities, request quotes from Sage Intacct, Acumatica, and NetSuite. Ask each to produce an overhead rate report from your own chart of accounts.
If the firm already runs a PSA or timesheet system, buy the ledger that system names as a sync target. Kantata and Replicon both quote by firm.
If you are a solo licensed engineer billing hourly, FreshBooks Premium at $70 a month covers project profitability with no client cap.
Evaluation Checklist
Run one real project through a QuickBooks Plus trial: enter labor, one subconsultant bill, and a progress invoice, then open the project profitability report.
On QuickBooks, count billable users and time-tracking-only users separately, then count accounts and class tags against the Plus limits of 250 and 40.
On Xero, confirm Established before you sign. Projects and multi-currency are off Early and Growing.
On FreshBooks, confirm Premium if the margin report matters. Project profitability is not on Plus.
On BigTime, ask which tier holds project budgeting and what Premier costs. Essentials is the only published rate.
On Sage Intacct, Acumatica, and NetSuite, get the quote to name modules, entities, and the implementation fee in writing.
Ask every vendor to show WIP for a lump-sum project that is part way complete: earned revenue, invoiced revenue, and the difference.
Pricing Overview
Small-firm ledger with projects
QuickBooks Plus when the CPA closes in QuickBooks, Xero Established when a per-user fee matters, and Zoho Books Professional when the team already lives in Zoho.
Per organization, monthly
Solo engineer
FreshBooks Premium when a licensed engineer bills hourly and wants project profit with no client cap.
Per account, monthly
Time and billing layer
BigTime Essentials beside QuickBooks when timesheets and billing rates are the gap.
Per user, monthly
Project accounting in the ledger
Sage Intacct, Acumatica, and NetSuite when overhead rates, entities, or WIP belong in the general ledger.
Custom quote
PSA and timesheet systems
Kantata and Replicon when resourcing and timesheets already run the firm and a ledger syncs behind them.
Custom quote
Pricing Comparison
| Tool | Published price | What that price buys | Billing |
|---|---|---|---|
QuickBooks | $140/mo Plus | Job costing, project profitability, progress invoicing. 5 billable users plus unlimited time-tracking-only users. Advanced is $340/mo for 25 billable users. | Per subscription, monthly |
From $20/user/mo, Essentials | Time and expense, billing, QuickBooks sync. Project budgeting and the Sage Intacct sync start on Premier, which has no published price. | Per user, period not stated | |
Sage Intacct | Custom quote | Project costing and billing, percent-complete revenue recognition, dimensions by location, department, and project. | Quote |
Acumatica | Custom quote | Professional Services Edition with project accounting and time and expense. Priced by applications and resources, with unlimited users. | Quote |
Xero | $97/mo Established | Project time and costs, multi-currency, no per-user fee. Growing is $59/mo with no projects. Early is $27/mo. | Per organization, monthly |
$40/mo yearly, Professional | Projects and timesheets for 5 users. Month to month is $50. Each added user is $3/mo, or $2.50 yearly. | Per organization | |
$70/mo Premium | Project profitability and unlimited billable clients. Plus is $43/mo for 50 clients with no project profitability. Extra users are $11/mo. | Per account, monthly | |
Kantata | Custom quote | Professional services automation for delivery, resourcing, and financials. A PSA advisor builds the quote. | Quote |
Custom quote | Annual license built from the core platform, modules, and users, plus a one-time implementation fee. | Annual, quote | |
Replicon | Custom quote | Timesheets and project costing from Deltek. Pricing is by contact. | Quote |
Vendor sites were read on October 4, 2026. QuickBooks shows 50% off for 3 months on its paid plans. A new US Xero customer can take 80% off the base plan for 3 months. FreshBooks shows 80% off Plus and Premium for 3 months and Lite at $1 a month for one year. No end dates are shown for those offers, and the list price is what renews. BigTime's page does not say whether the $20 rate is billed monthly or yearly. A quote row has no public dollar.
Mistakes to Avoid
- ×
Buying Essentials because it looks like accounting leaves jobs uncosted. Projects start on Plus, and Essentials has no job costing.
- ×
Counting only billable seats wastes money. QuickBooks Plus allows 5 billable users, time-tracking-only users do not count, and moving to Advanced to give engineers a login adds $200 a month.
- ×
Treating Xero Growing as Established minus $38 leaves project time and costs in a spreadsheet, because Growing has no project tracking.
- ×
Skipping subconsultant coding overstates margin. A sub bill entered without a project number never reaches the next invoice.
- ×
- ×
Signing a quote without the implementation fee. NetSuite states a one-time implementation fee on top of the annual license. Ask Sage Intacct and Acumatica the same question before you sign.
Expert Tips
- →
Test one lump-sum job in the trial: labor, one sub bill, a progress invoice, then the profitability report. The QuickBooks vs Xero comparison covers the ledger side.
- →
Code the sub bill to the project at entry. Reimbursables and subconsultant costs only reach the invoice when the job number is on the bill.
- →
Keep engineers on time-tracking-only access in QuickBooks Plus instead of buying billable seats for people who never post a transaction.
- →
Ask for the overhead rate report from your own chart of accounts before you sign any ERP quote, especially if public agencies pay you on cost-plus contracts.
- →
Pair BigTime with QuickBooks first, and move to Premier and Sage Intacct only when budgets and entities force it. The wider ledger list is the accounting software guide.
- →
Budget the list price. The QuickBooks and FreshBooks promos run 3 months and Xero's discount does too. Read QuickBooks alternatives if the renewal looks high.
Red Flags to Watch For
-
Essentials at $85 a month has no projects, so a QuickBooks quote that starts there cannot cost a job.
-
Xero Growing leaves out project tracking. A firm that buys it to save $38 a month will cost jobs in a spreadsheet.
-
FreshBooks Plus can bill a project, and project profitability is a Premium feature, so the margin stays hidden.
-
A quote-only vendor that will not name the implementation fee before you sign.
-
A rep who says WIP is handled but cannot show over and under billing on a lump-sum job from your own data.
The Bottom Line
QuickBooks Online Plus is the pick for a small engineering firm whose outside CPA closes in QuickBooks: $140 a month for job costing, progress invoicing, and WIP, with engineers on time-tracking-only access. Add BigTime when timesheets and billing rates are the gap. Choose Xero Established at $97 a month to avoid a per-user fee. Request Sage Intacct or Acumatica quotes when overhead rates or several entities make the ledger the project system. Start with a trial on one lump-sum job.
Frequently Asked Questions
What is the best accounting software for engineering firms in 2026?
QuickBooks Online Plus is the default for a small US engineering firm in 2026. It is $140 a month at list price, it includes job costing and project profitability, and Intuit documents progress invoicing and a work in progress report on that plan. Time-tracking-only users do not count against its 5 billable seats.
Firms that outgrow it move to Sage Intacct or Acumatica, which are custom quotes. A firm that sells design by phase should read the architects guide instead.
How much does accounting software for an engineering firm cost in 2026?
List prices on October 4, 2026: QuickBooks Plus is $140 a month and Advanced is $340. Xero Established is $97 and Zoho Books Professional is $40 a month billed yearly, or $50 month to month. FreshBooks Premium is $70. BigTime Essentials starts at $20 per user per month.
Sage Intacct, Acumatica, Kantata, NetSuite, and Replicon are custom quotes. New customers can take 50% off QuickBooks for 3 months and 80% off Xero for 3 months. Free plans stop short of project costing: Zoho Books Free ends at $50,000 of annual revenue and its projects start on Professional, and QuickBooks' free tier allows 2 invoices a month.
Can QuickBooks handle job costing and WIP for an engineering firm?
Yes, at a small scale. Plus and Advanced include job costing and project profitability, track labor cost, and support progress invoicing and a work in progress report. Plus caps the chart of accounts at 250 and classes and locations at 40 combined.
QuickBooks does not replace an A/E ERP when public agencies audit your overhead rate. Ask for an overhead rate report from your own chart of accounts before you rely on it for that.
Do I need BigTime if I already use QuickBooks?
You need a time layer when engineers' hours must carry both a cost rate and a billing rate, or when timesheets need approval before invoicing. BigTime Essentials starts at $20 per user per month and syncs with QuickBooks. Premier adds project budgeting and cost and rate management, and it has no published price.
If your firm is small and QuickBooks Plus time tracking covers the hours, BigTime is optional. Read the time tracking guide to compare the timer-only options.
When does an engineering firm outgrow QuickBooks?
The signals are concrete: more than 5 people post transactions, the chart of accounts nears 250 accounts, class and location tags near 40, the firm splits into separate legal entities, or a public agency asks for an audited indirect rate.
QuickBooks Advanced at $340 a month lifts the user and tag limits. Sage Intacct, Acumatica, and NetSuite are the next step when entities or overhead reporting are the problem, and each is a custom quote.
Do engineering firms need AIA-style billing?
Only when a client or prime requires pay applications in that format, which usually means subconsulting to an architect or a general contractor. QuickBooks Advanced lists AIA-style invoicing tied to project phases and milestones. Xero Established sends progress and deposit invoices.
Most direct-to-owner engineering work is billed by lump sum percent complete or time and materials, which Plus and Established already cover. The construction accounting guide covers firms with contractor-style billing.
What about BQE Core, Deltek Ajera, Deltek Vantagepoint, and Unanet?
They are the A/E specialists engineering firms get pitched most. BQE Core is quoted per user with add-on modules for accounting, CRM, HR, and payroll. Deltek describes Ajera as project and accounting software for small A&E firms and Vantagepoint as an ERP for architecture, engineering, and consulting, and both route buyers to a demo. Unanet sells an AE ERP through a demo request.
None has a Toolradar profile yet, so they are not ranked. Give them the same lump-sum job script you give the ten above.
Cite this page: Toolradar, "Best Accounting Software for Engineering Firms in 2026", updated October 2026, https://toolradar.com/guides/best-accounting-software-for-engineering-firms
Sources
Prices and plan details on this page come from each vendor's own pricing page, re-checked by the Toolradar pricing tracker:
- QuickBooks Online pricing, checked
- BigTime pricing, checked
- Acumatica pricing
- Xero pricing, checked
- Zoho Books pricing, checked
- FreshBooks pricing, checked
- Kantata pricing, checked
- NetSuite pricing, checked
- Replicon pricing
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