For Bay Area construction & contracting firms · 9 min read
Key Takeaways
- IRC §460 requires Percentage-of-Completion (POC) for “long-term contracts” — but the Completed-Contract Method (CCM) remains available for small contractors and home construction
- Small Contractor Exception: gross receipts under $30M (2025, indexed) and contracts expected to complete within 2 years can use CCM — significant deferral opportunity
- Home Construction Contract exception removes the gross receipts cap entirely for residential builders — California spec home builders and townhouse developers should evaluate carefully
- Look-Back Method (§460(b)(2)) applies to POC contractors above $30M — annual reconciliation with interest on prior-year tax differences
- California conforms to federal §460 with modifications; California PTE election still available for construction S-Corps and partnerships
Construction tax accounting is its own world. IRC §460 mandates how contractors recognize income on long-term contracts, with exceptions that can save (or cost) a Bay Area builder hundreds of thousands of dollars depending on the method elected. The choice between Percentage-of-Completion (POC) and Completed-Contract Method (CCM) is one of the highest-leverage decisions in the construction CFO’s playbook — and one of the most commonly mis-handled.
The §460 Framework: When You Have a Choice
IRC §460 requires Percentage-of-Completion (POC) for any “long-term contract” — defined as a building, installation, construction, or manufacturing contract that begins in one tax year and ends in a later year. Without an exception, every Bay Area general contractor with multi-year projects is mandated to POC.
Two major exceptions preserve choice: (1) the Small Contractor Exception under §460(e)(1)(B) — average annual gross receipts under $30M (indexed 2025) and contracts expected to complete within 2 years; and (2) the Home Construction Contract exception under §460(e)(1)(A) — residential construction has no gross receipts cap.
| Method | Income Recognition | Best For |
|---|---|---|
| Percentage-of-Completion (POC) | Each year, based on cost-to-cost ratio | Large contractors, lenders/sureties want it |
| Completed-Contract (CCM) | All income at contract completion | Small contractors maximizing deferral |
| Cash Method | When cash received/paid (where allowed) | Sole proprietors with very small contracts |
| Exempt Construction Contract | POC-required jobs that qualify out | Home construction, small contractors |
Why CCM Is the Bay Area Builder’s Tax Friend
For an eligible small contractor, CCM defers all contract income until completion. A Bay Area general contractor with a $4M residential project running from October Year 1 through July Year 2 recognizes zero income from that project in Year 1 — even though they’ve incurred 30% of costs and received 30% of progress draws.
Multiplied across multiple in-progress contracts, the deferral can be substantial. A Bay Area builder with $20M of in-progress contracts at year-end might defer $4M-$6M of taxable income to the following year compared to POC. At blended federal+California tax rates of 40-50%, that’s $1.5M-$3M of cash flow timing.
Cost Allocation Discipline
CCM creates a powerful incentive to allocate costs to in-progress contracts (where they sit on the balance sheet as WIP, not income statement) rather than to overhead (where they reduce current taxable income). The IRS scrutinizes the line between job costs and indirect costs closely. Milestone’s construction practice maintains a documented Uniform Capitalization (§263A) study for every contractor client — the easiest cost defense against IRS challenge.
When POC Is Required (or Strategically Better)
POC is mandatory above $30M gross receipts (excluding home construction). It’s also strategically valuable when (a) you need consistent annual income for bonding capacity or bank covenants, (b) you have current-year losses to absorb, or (c) you want clean GAAP-conforming financials for an exit.
Sureties (the bonding companies that issue performance bonds for public works contracts) generally require POC-based financial statements regardless of tax method. Bay Area contractors bidding on public works often run POC for financial statement purposes and CCM for tax purposes — the IRS permits this divergence as long as documented.
Look-Back Method: The POC Contractor’s Annual Tax
Once a contractor uses POC and exceeds the small contractor threshold, IRC §460(b)(2) requires an annual Look-Back Method calculation. At completion, the contractor recalculates the prior years’ POC income using actual contract results vs. estimated, and pays (or receives) interest on the differences.
Look-Back is mechanically complex — Form 8697 with separate calculation for each completed contract. Most accounting systems don’t natively support it. We see Bay Area construction firms miss Look-Back filings entirely or under-calculate, then face IRS adjustments years later.
Look-Back Method is the IRS’s answer to construction estimation games. If you overestimated costs in early years (deferring income), you pay interest on the deferred tax. If you underestimated, you collect interest. Either way, the IRS makes the math whole over the contract life.
Section 199A QBI: Construction-Specific Considerations
Construction is a “qualified trade or business” under §199A, meaning Bay Area construction S-Corps and partnerships qualify for the 20% qualified business income deduction. The QBI deduction can save a contractor netting $500K up to $100K in federal income tax annually — but the deduction phases out at higher income unless wages and qualified property exceed specified thresholds.
For Bay Area construction firms with significant W-2 wages and equipment, QBI is rarely a bottleneck. Service-heavy firms (architects, designers) face stricter limits. Construction specifically is excluded from the SSTB (specified service trade or business) limitation that hits accountants, lawyers, and consultants.
California PTE and Construction Special Issues
California’s AB 150 PTE election applies to construction S-Corps and partnerships the same as any other entity. For a Bay Area construction firm partnership netting $2M with three partners, the PTE election can save $50K-$100K in combined federal tax annually.
California-specific construction items: prevailing wage compliance on public works (CA Labor Code §1720+) creates documentation requirements that interact with payroll and §263A. Subcontractor 1099 reporting for California construction is strict — independent contractor mis-classification under AB 5 has been a major California enforcement priority.
Frequently Asked Questions
I’m a $5M residential contractor. CCM or POC?
CCM almost certainly. You qualify for both the small contractor and home construction exceptions, and the deferral benefits are significant. We file Form 3115 to change accounting method when migrating new clients from POC to CCM — typically year 1 with us produces a one-time large income deferral that yields tens of thousands in immediate tax savings.
How do I know if my contract is “long-term” for §460?
Two conditions: (1) the contract is for the construction, manufacturing, installation, or building of real or personal property, and (2) the contract begins in one tax year and ends in a later tax year. A 6-month job entered and completed within a single tax year is not long-term — even if it would otherwise be construction. Boundary cases at year-end are common audit issues.
Can I deduct construction equipment immediately under §179?
Yes. The 2025 §179 limit is $1.16M with phase-out starting at $2.89M of total qualifying property. Combined with §168(k) bonus depreciation, Bay Area contractors can expense most equipment in year of purchase. Trucks, excavators, scissor lifts, and tools all qualify.
What’s the biggest construction tax mistake you see?
Failing to allocate indirect costs to in-progress contracts under §263A — taking them as current-year overhead deductions instead. The IRS aggressively reverses this on audit, often years later, with interest. A properly documented §263A study takes one week and protects every future year.
Related Resources
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About the Author
Ronak Bhatt, CPA, MBA
Founder of Milestone Certified Public Accountants in Pleasanton, CA. Ronak leads tax strategy and advisory engagements for Bay Area high-net-worth families, business owners, and real estate investors. Active member of the AICPA and CalCPA, with deep experience in entity structuring, tax planning, IRC §469 passive activity rules, cost segregation, and partnership taxation.
This article is for general information and does not constitute tax, legal, or investment advice. Individual situations vary; please consult a CPA before making tax elections. Milestone CPAs is licensed in California and serves clients across the Bay Area and Tri-Valley.
