THE SHORT VERSION
- Start by setting aside 25%–30% of net freelance profit — income minus business expenses, not gross revenue.
- Use 30%–35% if your state income tax is high, your household has other income pushing you into higher brackets, or last year’s payments came up short.
- Move the money to a separate account every time a client pays you. Quarterly discipline starts on invoice day, not in April.
The useful tax set-aside rate is not a universal percentage. It is a cash reserve large enough to cover three separate bills — federal income tax, self-employment tax, and any state income tax — without draining the account you use for rent, software, and groceries.
For most US freelancers, 25%–30% of net profit is a sensible first estimate. It is deliberately a planning range rather than a tax-return calculation, because cash planning has to work months before the final numbers are known.
Start with net profit, not revenue
Revenue is everything clients paid you. Net profit is revenue minus ordinary business expenses — software, equipment, contractors, insurance, the deductible share of your phone and internet. Both income tax and self-employment tax are driven by profit, so reserving a percentage of gross revenue over-saves when expenses are meaningful (harmless but inefficient) and under-thinking expenses under-saves (genuinely painful).
Example: you collect $8,000 in a month and spend $1,500 on deductible costs. Your working profit is $6,500. A 28% reserve applies to that $6,500 — a transfer of $1,820, not $2,240.
What the money actually covers
Three obligations stack on top of each other, and the middle one surprises every first-year freelancer:
- Self-employment tax — 15.3% (Social Security 12.4% + Medicare 2.9%) applied to 92.35% of net earnings. This exists at every income level; there is no standard deduction against it. For 2026 the Social Security portion stops at $184,500 of earnings.
- Federal income tax — progressive brackets applied after the standard deduction ($16,100 single / $32,200 married filing jointly for 2026) and after the QBI deduction most freelancers qualify for.
- State income tax — anywhere from 0% (TX, FL, WA, TN, NV, and others) to roughly 10%+ (CA, NY, OR at higher incomes). This is the single biggest reason two freelancers with identical income need different set-aside rates.
Worked example: $75,000 income, $10,000 expenses, single filer
Net profit: $65,000. Here is the approximate 2026 federal math, rounded for readability:
| Step | Amount |
|---|---|
| Net profit (Schedule C) | $65,000 |
| Self-employment tax: $65,000 × 92.35% × 15.3% | ≈ $9,185 |
| Deduction for half of SE tax | − $4,592 |
| Standard deduction (single, 2026) | − $16,100 |
| QBI deduction (≈20% of qualified income) | − $8,862 |
| Taxable income | ≈ $35,446 |
| Federal income tax (2026 brackets) | ≈ $3,900 |
| Federal total (income + SE tax) | ≈ $13,100 |
| As a share of $75,000 gross | ≈ 17.5% federal only |
Add a mid-range state at 5% of roughly $44,000 state-taxable income — about $2,200 — and the all-in bill lands near $15,300, or roughly 20% of gross. A 25% set-aside leaves comfortable margin; 30% builds a small cushion that becomes January’s celebration rather than January’s crisis.
| NOTEYour rate is a cash-planning estimate, not a return. Deductions, credits, filing status, a spouse’s W-2 income, and state rules all move the final bill. Run your own numbers in our free tax set-aside calculator, and treat the result as a planning buffer. |
When to use a higher rate
- High-tax state. California, New York, Oregon, Minnesota, New Jersey, Hawaii — move to 30%–35% by default.
- Other household income. A spouse’s salary can push your freelance profit into higher brackets than it would reach alone. The freelance dollars are taxed at your household’s top marginal rate.
- You came up short last year. Underpayment penalties are interest, not catastrophe, but the pattern compounds. Overshoot for a year and reset.
- Income is climbing fast. A rate calibrated to last year’s bracket under-saves in a growth year. Recalculate at mid-year if revenue is running 25%+ ahead.
The system: transfer on payday, not in April
The rate matters less than the mechanism. Freelancers rarely fail at tax math; they fail at having the cash in one spendable pile for eleven months.
- Open a separate savings account — ideally at a different bank than your operating account, with no debit card attached. Friction is the feature.
- Every time a client pays, transfer your percentage the same day. Payment lands, transfer goes. Two minutes, no judgment calls, no “I’ll catch up next month.”
- Pay quarterlies from that account only. Your operating balance stays honest — what’s there is actually yours to spend.
- True up each January. Surplus after filing? Lower the rate a point or two, or sweep it to retirement. Shortfall? Raise it.
Common mistakes worth naming
- Saving a percentage of revenue instead of profit — over-reserves for expense-heavy businesses and hides your real margins from you.
- Skipping the reserve in “small” months — the IRS sums the year; your set-aside should too. Percentage of every payment, no exceptions.
- Forgetting SE tax exists — the 15.3% applies from the first $400 of net earnings, long before income tax kicks in. It is why “I barely made anything, I won’t owe” goes wrong.
- Treating the reserve as an emergency fund — it is the government’s money on layaway. Build a separate buffer for slow months.
This guide is educational and general. It is not individualized tax advice — when your situation involves multiple states, an S-corp election, or a prior-year shortfall, a freelancer-savvy CPA earns their fee. Figures cited are for tax year 2026 and are updated each January.