I Just Got Paid for a Big Project — How Much Should I Keep for Taxes?
Quick answer
That big number in your account isn't all yours — and the safest move is to act before it starts feeling like it is. A common planning starting point is to move 25–35% of the payment straight into a separate tax account the moment it lands, then treat only what's left as available. You're taxed on your profit, not the full amount, and in many places on self-employment contributions on top of income tax, which is why the slice is bigger than new freelancers expect. The exact percentage depends entirely on where you live, so here's how to set aside sensibly — as an estimate to confirm locally, not tax advice.
This is general guidance, not tax advice. Tax rates, brackets, and rules vary significantly by country and situation — confirm your set-aside with a qualified local professional.
Key takeaways
- The payment landed gross. Unlike a salary, nothing was withheld — a chunk already belongs to the tax authority.
- Move the set-aside the moment it arrives. Before it feels spendable is the only reliable time to separate it.
- 25–35% is a common starting range. A placeholder to check against your real situation, not a universal figure.
- You're taxed on profit, not gross. Income minus allowable expenses — which is why tracking deductible costs matters.
- Self-employment tax is the surprise. The social-contribution line an employer used to share is what catches people out.
- Keep it in a separate account. Out of your main balance, out of temptation.
- Timing matters too. Many countries want quarterly or estimated payments, not one annual lump sum.
- A big year may be taxed harder. A large payment can tip you into a higher band, so set aside at the top of your range.
How much of a big freelance payment is actually mine?
Less than the number on the screen — and the gap is exactly what trips freelancers up. When you were employed, tax vanished from your pay before you ever saw it. As a freelancer, the whole payment lands gross, which creates a powerful illusion: it all looks like yours, right up until the tax bill arrives and reveals that a quarter or a third of it never was.
Gross is not take-home. A $6,000 project payment is not $6,000 of spendable money. Some of it is the tax authority's share, sitting in your account temporarily. The trick is to treat that portion as already gone the instant the money arrives.
The illusion is the enemy. Money in your main account feels available, and available money gets spent. Freelancers rarely get caught out because they don't know they owe tax — they get caught because the tax money felt like theirs for a few months and quietly disappeared into normal life.
Acting fast is the whole game. The single habit that prevents tax-season panic is moving the set-aside out of reach the day a payment lands, not the week the bill is due.
How much should I move aside the moment a payment lands?
Apply your set-aside percentage to the payment right away and transfer it out. Using a 25–35% planning range on a $6,000 payment, here's what to park and what's genuinely left to work with:
| $6,000 payment | Set aside for tax | Left to work with |
|---|---|---|
| At 25% | $1,500 | $4,500 |
| At 30% | $1,800 | $4,200 |
| At 35% | $2,100 | $3,900 |
Pick the rate that fits your country and income — and lean higher if you're unsure or having an unusually big year. The Tax Set-Aside Calculator turns this into a habit: enter your expected income and rate and it shows the set-aside per month and what's left, so each payment has a clear "move this much" number. Whatever's left after the set-aside still isn't all fun money — but at least the tax authority's share is no longer sitting in your account pretending to be yours.
Why is it taxed differently than I think?
Two things make a freelance tax bill bigger and stranger than the employee version, and both are worth understanding before you decide your percentage.
You're taxed on profit, not the payment. In most systems, tax applies to your income minus allowable business expenses — software, equipment, a portion of home-office costs, and so on. That works in your favour: the more legitimate deductible costs you track, the smaller the taxable figure. Keeping receipts isn't admin for its own sake; it's money.
Self-employment tax sits on top. In many countries, freelancers owe an additional social-security or national-insurance contribution that an employer used to split with them. This is the line that shocks new freelancers, because it's charged on top of ordinary income tax — and it's the main reason a naive "I'll just keep 15% like my old payslip showed" set-aside falls badly short.
That's why the slice is 25–35%, not 10%. Income tax plus self-employment contributions, with deductions pulling the other way, is how the common planning range lands where it does. Your real number depends on your country and bracket, so treat the range as a starting point to confirm.
Where should the tax money go — and when do I pay it?
Somewhere you can't casually spend it, on a schedule that matches your local rules.
A separate account, not your main balance. The whole point is to remove the set-aside from view. A distinct savings account — ideally one that's slightly annoying to transfer out of — converts willpower into a one-time setup decision.
Match the timing, not just the amount. Many countries require estimated or quarterly tax payments through the year rather than one annual lump sum, and missing those dates can mean penalties. Setting aside the right amount on the wrong schedule still leaves you exposed, so check when your payments are due.
Make it automatic. A standing rule — "every payment, X% moves the same day" — beats deciding case by case. The freelancers who never panic at tax time are rarely the most disciplined; they're the ones who removed the decision.
What about the money that's left?
Treat the post-set-aside figure as your real working income, not a windfall. Even after tax is parked, a big payment often has to stretch further than it looks.
Some of it is business expenses. The costs that make your work possible come out of the remainder, and smoothing them across an irregular income is part of the job.
Some of it is next month. Freelance income is lumpy. A large payment frequently has to cover the quiet weeks that follow, which is why treating it as pure profit is how people end up busy but broke despite the occasional big cheque. If forgetting the tax slice is a pattern, our guide on what happens when you forget to save for taxes is worth a read, and the deeper habit is covered in how much to set aside for taxes.
Frequently asked questions
How much of a payment should I keep for taxes? A common planning start is 25–35%, moved into a separate account the moment the payment lands. The right figure depends on your country, income, and contributions — treat it as an estimate, not tax advice.
Is the whole payment mine to spend? No. It lands gross, so a slice already belongs to the tax authority before you touch it. Spending the full amount is the classic way to get caught short.
Do I pay tax on the full payment or my profit? Usually on profit — income minus allowable expenses — not gross. Tracking deductible costs lowers the taxable figure, though the rules vary by country.
Where should the tax money go? A separate savings account you don't touch, so it never feels spendable.
When do I actually pay? Many countries want quarterly or estimated payments during the year, not one lump sum. Check your local schedule to avoid penalties.
What's self-employment tax? An extra social-security or national-insurance contribution freelancers owe on top of income tax — the part an employer used to share. It's the line that surprises people most.
What if I already spent it? Contact the tax authority or an accountant early about a payment plan, then set aside from your next payment so the gap stops growing.
Does a big one-off payment get taxed more? It can, if it pushes you into a higher band, so set aside at the top of your range on a big year. How brackets apply depends on your country.
Conclusion
The moment a big payment lands is the moment the decision gets made — usually without you noticing. Leave it in your main account and your brain quietly files the whole sum as "mine," which is why the tax bill feels like a robbery months later. Move 25–35% out the same day and the story changes: the part that was never yours leaves before it can be spent, and tax season becomes a transfer you already made rather than a hole you have to fill.
You don't need to predict your exact rate to be safe — you need to act early and lean a little high. Open the separate account, pick a percentage at the cautious end of your range, confirm the real figure and payment dates with a local professional, and make the transfer a reflex on every payment. Do that, and the next big cheque is something to enjoy instead of something to fear.
See how much of each payment to set aside →