Web Developer Tax Calculator (2026)
Contract and freelance developers often earn enough that the S-Corp election and QBI deduction make a real difference. This free tool estimates your 2026 federal income tax and self-employment tax, sizes your four quarterly payments, and flags the deductions freelance developers miss most.
Your business profit and how you file. No sign-up, no documents.
Federal + self-employment tax, your effective rate, and four payment amounts.
Add the four due dates to your calendar and pay directly at IRS.gov.
Your 2026 estimate
Answer a few questions — your numbers update live and never leave this page.
Federal estimate only. Add your state for a combined number.
Your 4 payments
$16,647 for the year- Q1 · Jan – Mar$4,162Due April 15, 2026
- Q2 · Apr – May$4,162Due June 15, 2026
- Q3 · Jun – Aug$4,162Due September 15, 2026
- Q4 · Sep – Dec$4,161Due January 15, 2027
You could save real money with an S-Corp
After ~$1,200–$2,500 in payroll and filing costs, that's about $1,556–$2,856 net — likely worth electing, as long as the salary stays reasonable.
Saved scenarios
Save your current numbers to compare scenarios side by side — sole prop vs S-Corp, a raise, a bigger retirement contribution. Stored only in this browser.
Never miss a tax deadline again
Your numbers have real money on the line
At your income, an S-Corp election, a retirement-plan choice, or one missed deduction can swing your bill by thousands. A flat-fee review catches it — no retainer, no sales pitch.
- ✓Whether an S-Corp actually nets out for you
- ✓Deductions you're leaving on the table
- ✓A retirement plan that cuts this year's tax
Recommended: Shashank Beri, CPA · independent, no obligation
What freelancers actually owe
How taxes work for freelance developers
Contract development income is self-employment income — paid on a 1099 with no withholding. Your profit after expenses owes federal income tax and self-employment tax, paid in four quarterly installments.
Self-employment tax is 15.3% on 92.35% of your net profit — the Social Security and Medicare an employer would normally split with you — and the calculator stacks it on top of your income tax automatically. You also deduct half of it against income tax.
Top tax write-offs for freelance developers
The usual developer write-offs: a home office, hardware (laptop, monitors, test devices), software and cloud bills (AWS, GitHub, JetBrains, Figma), online courses and certifications, a share of phone and internet, and any subcontractor payments.
Lowering net profit is your most powerful lever: because profit is the base for both income tax and self-employment tax, every legitimate deduction saves you on both. Keep clean records and a separate business account.
Should a web developer elect an S-Corp?
Developers are among the most common S-Corp candidates — contract rates push net profit well past the break-even, where skipping 15.3% on the distribution portion saves real money. Software development generally isn't a 'specified service' business, so you also keep the full QBI deduction.
An S-Corp splits profit into a reasonable salary (still subject to FICA) and distributions (which skip the 15.3% self-employment tax). Running one costs roughly $1,200–$2,500 a year, so it pays off once the saving clears that — the comparison above shows your exact break-even.
Your 20% QBI deduction
Good news for QBI: web developer work isn't a "specified service" business, so you keep the full 20% deduction even at higher incomes (subject only to the W-2 wage limit).
The QBI deduction lets most self-employed people deduct 20% of business profit before income tax, on top of the $16,100 (single) / $32,200 (married filing jointly) standard deduction. The calculator applies it by default.
What this estimate covers
This is a 2026 planning estimate of federal income tax and self-employment tax for a sole proprietor or single-member LLC, with the standard deduction and a simplified 20% QBI deduction. It isn't tax advice.
It doesn't include state or local income tax (add your state in the calculator), tax credits, the net investment income tax, or the full QBI limitation for higher earners. For anything with real money on the line, confirm with a CPA.
Common questions
Often, once net profit is comfortably past ~$60,000–$80,000. The self-employment-tax saving on distributions usually beats the ~$1,200–$2,500 cost of payroll and a separate return. Use the comparison above for your number.
Read the guides
How much should I set aside for taxes as a freelancer?
The rule of thumb is 25–35% of net profit — here's how to find your exact number for 2026.
Read →Freelancer taxes1099 vs W-2 taxes: why freelancers pay more
Same pay, bigger tax bill. Why 1099 income costs more than a W-2 — and the deductions that close the gap.
Read →DeductionsSelf-employed tax deductions that actually cut your bill
Home office, health insurance, retirement, QBI, half your SE tax — the write-offs that actually lower your bill.
Read →