How creator income gets taxed
Content platforms don't withhold tax the way an employer does — whatever OnlyFans, Twitch, YouTube or Patreon pays out is gross income you're responsible for reporting yourself. In the US that means self-employment tax on top of ordinary income tax; in the UK it means Class 4 National Insurance on top of Income Tax. Both apply to profit, not revenue, so real business expenses reduce the bill.
What counts as a deductible expense
- Camera, lighting, streaming and editing equipment
- Editing, scheduling and analytics software subscriptions
- A reasonable share of internet and home office costs
- Platform-required costume, set or production expenses
Keep receipts and a simple log — both tax authorities can ask for evidence, and vague estimates get disallowed on audit.
US: why self-employment tax comes first
Self-employment tax (15.3%, covering Social Security and Medicare) applies to 92.35% of net profit, and it's calculated before income tax. Half of it is then deducted from taxable income, which this tool applies automatically.
UK: Class 4 National Insurance
Self-employed UK creators pay Class 4 NI on profits above the £12,570 threshold, in addition to Income Tax. Class 2 NI is voluntary for most people below the small profits threshold as of the current rules — check HMRC's current guidance for your situation.
Two worked examples
United States. A single-filer creator with $35,000 of net profit owes about $4,945 in self-employment tax and $1,723 in federal income tax, a total of $6,669. That leaves about $28,331 before state tax, an effective federal rate of roughly 19%.
United Kingdom. A creator with £35,000 of profit owes about £1,346 in Class 4 National Insurance and £4,486 in income tax, a total of £5,832, leaving about £29,168. That is an effective rate of roughly 17%.
What an extra $1,000 of deductions saves
Deductions reduce profit, and profit drives both taxes. In the US example, another $1,000 of genuine business expenses cuts the bill by about $253, because it lowers self-employment tax and income tax together. In the UK example the same £1,000 saves about £260. That is why keeping receipts is worth the effort. It is also why you should never invent expenses: only costs that are genuinely for the business count.
Records worth keeping
- Receipts and invoices for equipment, software and subscriptions.
- Payout statements from every platform, since they show what you actually earned.
- A simple log of the business share of mixed-use costs such as internet, a phone or a home office.
- Dates of purchases, because some equipment costs are claimed differently depending on timing.
Platform fees and income reporting
Some platforms report or pay you the amount after their cut, and others report the gross amount. Depending on how your income is reported, the platform's fee may be a deductible expense or may already be netted out, so confirm the treatment with a tax professional rather than deducting it twice. The calculator above takes the platform cut off first, then applies your expenses to what is left.
How much to set aside
Neither the US nor the UK withholds tax from platform payouts. A common rule is to move 25–30% of net profit into a separate account as money arrives. That covers the federal or national taxes above and leaves room for state or local tax. Adjust it once you have run your own numbers, and read the full tax guide for payment deadlines.
What this estimate leaves out
The calculator does not include state tax, the US 20% qualified business income deduction, additional Medicare tax, credits, Scottish rates, student loans or pension contributions. For many people the real bill is lower than the estimate, but a tax professional can confirm it. See the methodology page for every formula.