How Much Does a CPA Cost for a Construction Company?

A construction company’s CPA costs more than a retail shop’s or a consultant’s, and the gap is not small. A straightforward sole-proprietor contractor filing a Schedule C with basic job costing typically pays $1,500 to $3,000 for the annual tax return. An S-corp general contractor with multiple projects, a WIP schedule, and a bonding program pays $3,000 to $7,000 or more. Add monthly bookkeeping at $500 to $2,000 per month, and a reviewed financial statement for the surety at $5,000 to $15,000, and a midsize contractor’s annual accounting bill can run $20,000 to $40,000. That is not overpriced. It is what it costs to produce the financial information that keeps the bonding program alive, the tax elections optimized, and the IRS off the job site.

What does a construction CPA actually do that a regular CPA doesn’t?

Three things a general-practice CPA rarely handles, and all three are non-negotiable for a contractor above the handyman stage.

Job costing. Every revenue dollar and every cost dollar must be tracked to the project that earned or consumed it. A job cost report that shows actual cost against estimated cost, by project, by cost category (labor, materials, subcontractors, equipment), is the only way to know which jobs make money and which ones eat margin. General-practice bookkeeping codes expenses by category. Construction bookkeeping codes them by category and by project. The second dimension is where the work lives.

WIP schedules. A work-in-progress schedule compares costs incurred to total estimated costs on every open project, measures percentage complete, and computes overbillings (a liability, you have billed more than you have earned) and underbillings (an asset, you have earned more than you have billed). The surety underwriter reads the WIP before anything else on the financial statements. A CPA who cannot build a WIP schedule from the books is not equipped to serve a bonded contractor.

Accounting method elections. The choice between cash, accrual, completed-contract, and percentage-of-completion determines when revenue is taxable and directly affects cash flow. Contractors under the $32 million gross receipts threshold (for 2026, adjusted annually) can choose, and the choice is a tax election on Form 3115 to change it later. A CPA who defaults every contractor to cash because it is simpler may be costing the contractor tens of thousands in mismatched income recognition.

How much does tax return preparation cost?

The return price depends on the entity type, the number of projects, and whether the surety requires financial statements on a different basis than the tax return.

Contractor profile	Typical annual return fee	What’s included
Sole proprietor, Schedule C, under $500K revenue, basic job costing	$1,500 to $3,000	1040 + Schedule C, home office, vehicle, 1099 reconciliation, estimated tax vouchers
S-corp, under $2M revenue, 5-10 active projects	$3,000 to $5,000	1120-S + K-1s, officer compensation, job cost review, method election
S-corp or C-corp, $2M-$10M revenue, bonding program	$5,000 to $7,000	1120-S/1120, WIP schedule, method election, multi-state returns, depreciation schedules
GC, $10M+ revenue, audited financials, multi-state	$7,000 to $10,000+	Full return suite, WIP reconciliation, deferred tax, state apportionment, bonding support

These ranges assume the books are clean when delivered to the CPA. If the CPA has to reconstruct a year of transactions from bank statements because the bookkeeping was not maintained, add $2,000 to $5,000 for the reconstruction, which is the single most common budget-buster in contractor accounting.

State returns add to the total. A contractor working in three states files a federal return plus three state returns, each with its own apportionment. Additional state returns typically add $300 to $800 each. The multi-state compliance guide covers the full picture.

How much does construction bookkeeping cost?

Monthly bookkeeping for a construction company runs $500 to $2,000 per month, depending on transaction volume, the number of active projects, and whether the bookkeeper also prepares the WIP schedule.

Volume	Typical monthly fee	What’s included
Under 100 transactions/month, 3-5 active projects	$500 to $800	Bank and credit card reconciliation, job-coded AP/AR, sub payments, 1099 tracking, monthly P&L by job
100-300 transactions/month, 5-15 active projects	$800 to $1,500	Everything above plus progress billing, retainage tracking, AIA billing support, WIP data
300+ transactions/month, 15+ active projects, multi-state	$1,500 to $2,000+	Everything above plus certified payroll, multi-state sales tax tracking, WIP schedule prep, surety reporting package

A general-practice bookkeeper charging $200 to $400 per month (the going rate for a basic retail or service business) is almost certainly not tracking costs by project, not splitting retainage from AR, and not producing data that feeds a WIP schedule. The lower monthly cost shows up later as higher CPA fees at year end (the CPA reclassifies a year of entries), a weaker bonding application (the surety cannot get the numbers it needs), and missed deductions (costs not coded to projects cannot be matched to revenue for the method election).

How much do reviewed or audited financials cost?

Most surety programs require at minimum a CPA-reviewed financial statement for bonding programs above $1 million in aggregate, and an audit for programs above $5 million to $10 million (the threshold varies by surety). This is a separate engagement from the tax return, billed separately, and it is the single largest line item in a bonded contractor’s annual accounting bill.

Service	Typical fee	When it’s required
Compilation	$2,000 to $5,000	Small bonding programs, bank lines of credit, internal use
Review	$5,000 to $15,000	Bonding programs above ~$1M aggregate, bank covenants
Audit	$10,000 to $30,000+	Bonding programs above ~$5M-$10M aggregate, government prime contracts

The price difference between a review and an audit is not markup. A review involves analytical procedures and inquiries. An audit involves testing transactions, confirming balances with third parties, and issuing an opinion. The audit requires more hours, more staff, and more liability insurance on the CPA’s side. A $15,000 audit fee on a $5 million contractor is not expensive by industry standards; it is what the work costs.

What drives the price up?

Five things consistently push a contractor’s CPA bill above the base ranges.

Messy books. A year of unreconciled transactions, personal charges on the business card, and material purchases coded to a generic “Expenses” account costs $2,000 to $5,000 to clean up before the return can be prepared. This is the most common reason contractors feel their CPA is expensive. The CPA is not overcharging; the bookkeeping shortfall is creating extra work.

Multiple states. Each state where a crew works can trigger income tax filing, payroll withholding registration, and sales/use tax obligations. A contractor working in five states may file five state returns, maintain five payroll registrations, and track sales tax across five different frameworks. Each state adds cost.

Change in accounting method. Switching from cash to accrual (or to percentage-of-completion) requires Form 3115 and a section 481(a) adjustment that may accelerate income into one year. The form itself runs $1,000 to $2,500 to prepare, and the planning around the adjustment can add more.

Delinquent filings. A contractor who has not filed for two or three years faces a reconstruction project (rebuilding the books from bank statements) plus multiple returns plus potential penalty abatement work. The total can run $5,000 to $15,000 depending on how many years and how messy the records.

Rapid growth without systems. A contractor who goes from $500,000 to $3 million in two years without upgrading the bookkeeping software, the chart of accounts, or the CPA relationship hits a wall where everything has to be rebuilt at once: new software, new chart of accounts, new processes, new financial statements for the surety. That rebuild is expensive because it is compressed.

What happens when you underspend?

The most expensive CPA is the one who charges too little to do the work correctly. Three failure modes that cost more to fix than the savings:

The surety downgrades the program. A contractor whose financial statements cannot produce a clean WIP schedule or whose balance sheet does not separate retainage from regular receivables will see the surety reduce the bonding program. A bonding reduction from $5 million to $2 million means the contractor cannot bid jobs above $2 million. The revenue impact dwarfs any accounting savings.

The IRS adjusts the method. A contractor on cash basis who should be on percentage-of-completion (because they exceed the $32 million threshold or have contracts over two years) faces a mandatory method change on audit. The section 481(a) adjustment accelerates all previously deferred income into one year, which can produce a tax bill many times larger than the annual accounting cost.

The 1099s are wrong. Missing or incorrect 1099-NEC filings trigger penalties of $60 to $310 per form (2026 rates) and, on audit, can lead to backup withholding assessments at 24% on every payment to an unidentified sub. A contractor who paid 15 subs $50,000 each without collecting W-9s faces $4,500 to $4,650 in 1099 penalties alone, plus the backup withholding exposure.

What should I do next?

If you are choosing a CPA for a construction company, ask three questions before you ask about price. Can you produce a WIP schedule from my books? Have you prepared bonding-quality financial statements before? Do you know the difference between completed-contract and percentage-of-completion, and can you tell me which one I should be on?

If the answer to any of those is no, the price does not matter. The wrong accountant at any price is more expensive than the right one.

• The bookkeeping basics guide covers how to set up the chart of accounts and job costing system so the books feed both the tax return and the surety package.
• The startup checklist covers entity formation, licensing, insurance, and accounting setup for new contractors.
• The job costing guide goes deeper into project-level cost tracking and the WIP schedule.
• The insurance and bonding guide explains what the surety needs from the financial statements and how bonding capacity works.
• The estimated tax guide covers quarterly payment calculations and how the accounting method feeds into them.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.