Invoice Take-Home Calculator — What You Actually Keep From a 1099 Invoice
A $8,000 invoice on top of $70,000 of income already earned leaves you about $4,480. Set aside $3,520 — that is your marginal rate of 44.0% including California tax, which is what the next dollar costs, not the lower average rate your whole year works out at. Move it to a separate account the day the invoice clears.
| Invoice amount | $8,000.00 |
|---|---|
| Tax set aside at your 44.0% marginal rate | −$3,520.00 |
| Set aside for taxMove this to a separate account the day the invoice clears. | $3520.00 |
| Combined marginal rateSelf-employment tax plus your federal and state marginal income tax rates. This is what the next dollar costs you. | 44.0% |
| You keep | $4,480.00 |
This apportions tax at your marginal rate, which is the right way to think about one invoice on top of income you already have. Tick "annual" to see the full-year picture instead.
How much of this invoice is actually yours
Three deductions, in this order. The order matters, because each one changes the base of the next.
That last line is the whole point of this page, and it is where nearly every other answer to "how much should I save for tax" goes wrong.
Marginal, not average
The standard advice is to set aside a flat 25–30%. That figure is roughly what a full year of self-employment income averages out to. But an invoice does not arrive at the average — it arrives on top of everything you have already earned, in whatever bracket that leaves you in.
| Rate | What it describes | Value | Set aside on $8,000 |
|---|---|---|---|
| Average | tax across the whole $78,000 year | 0.0% | $0.00 |
| Marginal | tax on the NEXT dollar you earn | 44.0% | $3,520.00 |
A gap of $3,520.00 on a single invoice — and it is not a one-off. Every invoice you set aside for at the average rate is short by roughly the same proportion, so the shortfall accumulates all year and presents itself in one piece at filing. The money was never extra; it was always the government's, and it was spent because a percentage looked reassuring.
The reason the two diverge so far is that a self-employed marginal rate is a stack, not a bracket. Self-employment tax contributes about 14.13 points regardless of bracket; your federal marginal rate sits on top of that; and California's marginal rate sits on top of both. Someone who thinks of themselves as "in the 22% bracket" is looking at 44.0% on the next dollar.
A worked example
A $8,000 invoice on top of $70,000 already earned, California
| Line | Working | Amount |
|---|---|---|
| Invoice | face value | $8,000.00 |
| Payment processing | bank transfer, no fee | −$0.00 |
| Received | what reaches your account | $8,000.00 |
| Set aside for tax | 44.0% marginal × $8,000.00 | −$3,520.00 |
| Yours to spend | $4,480.00 |
Just over 56% of the invoice is genuinely yours. The practical habit that follows: move the set-aside to a separate account the day the money clears, not at quarter end. The tax is not a bill that arrives later — it was never your money, and the only thing that changes is whether it is still there when the quarterly payment is due.
The whole-year view
Tick "treat the amount as a full year" and the calculator switches from marginal to total: on $78,000 of annual income the full tax is $20,712.46, an average of 0.0%. Both numbers are correct and they answer different questions.
- Average answers "what does a year of this cost me?" — use it for pricing, planning, and deciding whether the work is worth doing at all.
- Marginal answers "what does this next invoice cost me?" — use it for setting money aside, and for judging whether one more project is worth taking.
Using the average for the second question is the mistake this page exists to catch.
Who this is for
Freelancers and contractors who want to know what an invoice actually leaves them, and anyone who has been setting aside a flat percentage without checking it against their real position. Enter the income you have already earned this year — that single field is what turns a generic percentage into an answer that is right for you.
What this does not account for
- Deductions you have not entered. Every deductible dollar saves you the full marginal rate, so expenses matter roughly 44¢ on the dollar here.
- The QBI deduction, which can reduce the federal portion — see the self-employment tax calculator, which models it.
- Retirement contributions, which reduce taxable income but interact with QBI.
- Federal tax credits. The child tax credit and other federal credits are not modelled — the dependents field feeds state exemptions only, so a filer with dependents will owe less federally than shown.
- Quarterly payment timing. This tells you how much; it does not tell you when.
- 5 states are modelled (California, Florida, Illinois, New York, Texas). Others run federal only.
- This is an estimate, not advice.
Sources and dates
Tax parameters come from the IRS and state revenue departments for tax year 2026, and processor fees from each processor's published pricing — all listed below with the date each was checked. The marginal and average rates are both computed by running this page's engine, once on the invoice and once on the full year. If a figure disagrees with your accountant, trust your accountant and let us know.
Questions people actually ask about this
How much of an invoice should I set aside for tax?
On this example, $3,520 of a $8,000 invoice — 44.0%. That figure is your combined marginal rate: self-employment tax plus your federal and state marginal income tax rates.
The reason it is higher than the "set aside 25–30%" advice you have seen is that 25–30% is roughly an average rate across a whole year's income. One more invoice is not taxed at your average; it is taxed on top of everything you have already earned.
Why marginal rather than average?
Because the invoice arrives on top of income that already used up your lower brackets. Across the full $78,000 year, tax averages 0.0%. But the last $8,000 of it is taxed at 44.0%, because that money sits entirely in the top bracket you reach.
Set aside at the average and you would put away $0 instead of $3,520 — $3,520 short on this invoice alone. Repeat that across a year of invoices and the gap is the April surprise, arriving as a bill for money that was spent months ago.
Is the 30% rule of thumb wrong?
It is right for some people and dangerously low for others, and it never tells you which you are. At low income with the standard deduction absorbing most of it, 30% is generous. At the income in this example the true marginal figure is 44.0%, because California income tax stacks on top of federal and self-employment tax.
The rule of thumb also fails in the other direction in a first low-income year, where saving 30% means lending the government money you needed for rent. Both errors come from using one number where the answer depends on where you already are.
Why is my marginal rate so much higher than my tax bracket?
Because your bracket is only the income tax part. Self-employment tax adds 15.3% on 92.35% of net earnings — about 14.13 points — on top of your federal bracket, and California adds its own rate on top of that. A "22% bracket" freelancer is frequently facing a combined marginal rate in the forties.
This is also why the deduction hunt matters more for the self-employed than for employees: a deductible dollar saves you the whole combined rate, not just the income tax bracket.
Does the payment processor fee come off before or after tax?
Before. Processing fees are a deductible business expense, so tax is calculated on what actually reached you, not on the invoice face value. This calculator takes the fee off first and then applies tax to the remainder, which is the correct order and the one that produces a slightly better answer than doing it the other way round.
What if this invoice pushes me past the Social Security wage base?
Then the part above the base is charged 2.9% Medicare instead of the full 15.3%, and your marginal rate drops noticeably part-way through the invoice. The calculator handles the crossing and flags it in the result. It is one of the few places where earning more genuinely lowers your marginal rate, and it is worth knowing about if you are deciding whether to take on extra work late in the year.
Where these numbers come from
Rates last checked against the sources below on .
Rate schedule version 2026.1, effective .
- IRS Rev. Proc. 2025-32 — inflation adjustments for tax year 2026 retrieved 2026-08-02
- IRS Topic 751 — Social Security and Medicare withholding rates retrieved 2026-08-02
- IRS — COLA increases for dollar limitations on benefits and contributions retrieved 2026-08-02
- IRS Rev. Proc. 2025-19 — 2026 HSA and HDHP inflation adjustments retrieved 2026-08-02
- IRS Publication 15-T — Federal income tax withholding methods
- IRS Form 1040-ES — Estimated tax for individuals