Should an independent architect form an S-corp?

Often yes once net profit is reliably above roughly $90,000–$100,000. You pay a reasonable salary (subject to payroll tax) and take the rest as distributions that avoid the 15.3% SE tax, which can save thousands annually. Confirm the reasonable-salary figure with a CPA.

What can architects deduct on their taxes?

CAD/BIM software, workstations and plotters (often Section 179), state licensing, NCARB/AIA dues, continuing education, E&O insurance, a home office, and site travel. Ordinary, necessary business costs qualify.

How much self-employment tax do solo architects pay?

15.3% on 92.35% of net earnings (12.4% Social Security up to $176,100 for 2025, plus 2.9% Medicare with no cap), on top of income tax. High earners also owe the 0.9% Additional Medicare Tax above certain thresholds.

Is professional liability insurance tax deductible for architects?

Yes. Errors & omissions (E&O) insurance is an ordinary and necessary business expense and is fully deductible on Schedule C (or the S-corp return), reducing both income and self-employment tax.

Self-Employment Tax Calculator for Independent Architects (2025)

How much tax does a self-employed architect pay? A architect earning $130,000 with about $25,000 in business expenses owes roughly $27,753 in total federal tax for 2025 — a 15.3% self-employment tax plus federal income tax — or about $6,938 per quarter. A common rule of thumb is to set aside 25–30% of net income for taxes. Use the calculator below for your own numbers and state.

Independent and sole-practitioner architects are paid on 1099s or through their own firms with no withholding, so you owe self-employment tax plus income tax on net profit. This calculator estimates both and flags S-corp savings for higher earners.

Annual gross income (before expenses)

Total business expenses (incl. deductions below)

State

This tool provides estimates for educational purposes only and is not tax advice. Tax rules change; figures are based on 2025 federal rules. Consult a tax professional for your specific situation.

Deductions Architects often miss

Solo and small-practice architects commonly net $70,000–$160,000, and principals with steady commercial work earn more. Because income is high, an S-corp election is often a major self-employment-tax saver — discuss with a CPA.

CAD & design software: AutoCAD, Revit, ArchiCAD, SketchUp Pro, Adobe, and BIM/rendering subscriptions are fully deductible business tools.
Computers & plotters (Section 179): Workstations, large monitors, and large-format plotters/printers can often be fully expensed under Section 179 in the purchase year.
Licensing & continuing education: State licensing fees, NCARB dues, AIA membership, and continuing-education (HSW) courses required to keep your license are deductible.
Professional liability insurance: Architects' errors & omissions (E&O) insurance is a significant and fully deductible business expense.
Home office & travel: A dedicated home office (actual costs or $5/sq ft up to 300 sq ft) and travel to sites, jurisdictions, and clients (70¢/mile driving) are deductible.

Common tax mistakes for architects

Not electing S-corp status at high, stable profit and overpaying self-employment tax.
Forgetting to deduct expensive E&O insurance and licensing renewals.
Under-paying quarterly estimates on large, milestone-based project fees.
Missing Section 179 on workstations and plotters by depreciating slowly instead.

How self-employment tax works

As a self-employed architect, you pay a 15.3% self-employment tax (12.4% Social Security + 2.9% Medicare) on 92.35% of your net profit, plus federal and state income tax. A common rule of thumb is to set aside 25–30% of your net income for taxes.

Quarterly estimated tax deadlines (2025)

If you expect to owe $1,000 or more, the IRS requires quarterly estimated payments. For 2025 income the deadlines are: April 15, 2025; June 16, 2025; September 15, 2025; and January 15, 2026. Missing them can trigger underpayment penalties. The calculator above estimates your quarterly amount.

Frequently asked questions

Should an independent architect form an S-corp?: Often yes once net profit is reliably above roughly $90,000–$100,000. You pay a reasonable salary (subject to payroll tax) and take the rest as distributions that avoid the 15.3% SE tax, which can save thousands annually. Confirm the reasonable-salary figure with a CPA.
What can architects deduct on their taxes?: CAD/BIM software, workstations and plotters (often Section 179), state licensing, NCARB/AIA dues, continuing education, E&O insurance, a home office, and site travel. Ordinary, necessary business costs qualify.
How much self-employment tax do solo architects pay?: 15.3% on 92.35% of net earnings (12.4% Social Security up to $176,100 for 2025, plus 2.9% Medicare with no cap), on top of income tax. High earners also owe the 0.9% Additional Medicare Tax above certain thresholds.
Is professional liability insurance tax deductible for architects?: Yes. Errors & omissions (E&O) insurance is an ordinary and necessary business expense and is fully deductible on Schedule C (or the S-corp return), reducing both income and self-employment tax.