Freelance Tax Estimator: What to Set Aside From Every Invoice

Why freelance tax feels so much heavier than payroll

On payroll, tax is invisible. It leaves before the money arrives, and the employer quietly pays half your Social Security and Medicare contributions. Freelancing removes both cushions at once: the full 15.3% is yours, and the money lands in your account first, where it stops feeling like the government's.

That's the whole trap. A freelancer with $90,000 of profit who never separates tax money sees a healthy balance all year and a $22,000 bill in April. The fix isn't a better accountant — it's a percentage you apply the moment each invoice clears.

How to estimate your freelance taxes in 5 steps

1. 01

   Start with gross income, not what hit your bank

   Every client payment counts, including the amount a marketplace took before paying you out. Upwork's 10% is income you earned and then spent on a fee — you report the gross and deduct the fee. Miss this and your 1099 totals won't match your books.

2. 02

   Subtract every legitimate business expense

   Software subscriptions, your laptop, the home-office square footage, business mileage, health insurance premiums, accounting, courses, and subcontractors. Expenses reduce both your income tax and your self-employment tax, so a $2,000 deduction is often worth $600–$800 in real cash.

3. 03

   Work out self-employment tax first

   This is the one that surprises people. Employees split 15.3% of Social Security and Medicare with their employer; you pay both halves. The rate applies to about 92.35% of net profit, so $70,000 of profit carries roughly $9,890 of self-employment tax before a single dollar of income tax.

4. 04

   Layer income tax on top

   Take net profit, subtract half your self-employment tax and your standard deduction, then apply your bracket. Most solo freelancers earning $60k–$120k land in the 12–24% marginal range, which averages out to an effective income tax rate of roughly 10–18%.

5. 05

   Turn the total into a per-invoice percentage

   Add the two taxes, divide by gross income, and you have the share of every payment that belongs to the government, not you. Move it to a separate savings account the day an invoice clears. Quarterly deadlines then become a transfer, not a crisis.

What freelancers actually owe at different income levels

Estimates below assume a single US filer taking the standard deduction, with net profit after expenses and no state income tax. Your numbers will shift with filing status, deductions, and where you live — but the shape of the curve holds.

Notice the pattern: self-employment tax is flat as a percentage, income tax is what climbs. Below $40k you're mostly paying SE tax; above $100k the income-tax share overtakes it, which is when an S-corp election or a Solo 401(k) starts to pay for itself.

Deductions most freelancers forget to claim

Every deduction reduces net profit, which reduces both taxes at once. That's why a deduction is worth far more than its face value to a freelancer than to an employee.

• ✓Software and SaaS subscriptions used for client work
• ✓Laptops, monitors, cameras, and other equipment (often deductible in year one)
• ✓Home office — a percentage of rent, utilities, and internet based on floor area
• ✓Business mileage and travel to client sites or conferences
• ✓Self-employed health insurance premiums
• ✓Accounting, legal, and bookkeeping fees
• ✓Marketplace commissions and payment processing fees
• ✓Professional education, courses, and industry memberships
• ✓Retirement contributions through a SEP IRA or Solo 401(k)

Quarterly payments: the calendar that keeps you penalty-free

US estimated taxes are due four times a year — around April 15, June 15, September 15, and January 15 for the previous year's final quarter. If you expect to owe $1,000 or more, the IRS wants the money as you earn it, not in one April lump.

The simplest safe harbour: pay 100% of last year's total tax across the four instalments (110% if you earned over $150,000). Do that and underpayment penalties can't reach you, even if this year turns out to be your best one yet.

Price your rate so tax is already covered

Tax isn't only an accounting problem — it's a pricing one. If 28% of every invoice leaves again, your rate has to be built on take-home, not headline revenue. Work backwards: decide the salary you want to keep, then let the Target Income calculator add tax, expenses, and unpaid hours back on top.

If most of your work comes through marketplaces, run Platform Fees mode too — commissions and tax compound, and a 20% Fiverr fee on top of a 28% tax rate leaves far less than most sellers assume.

Frequently asked questions