Here's the January conversation nobody wants: a creator has their first proper year — say £48,000 profit — works out the tax and NI, budgets for it, and then opens the HMRC calculation to find the bill is half as big again as they expected. Nothing's wrong. That's payments on account working as designed.
The mechanics
Once your Self Assessment bill tops £1,000 (and most of your income isn't taxed at source), HMRC assumes next year will look like this year — and collects it in advance:
- 31 January: all of last year's tax plus 50% of it again as the first payment on account
- 31 July: the second 50%
So the first January after a good year costs roughly 150% of a year's tax. The following years are gentler — payments on account already made are credited against each new bill — but year one is a wall, and creator income's lumpiness makes it hit harder than it does salaried-adjacent businesses.
Three ways to take the sting out
- Know the number early. We tell clients their January figure months ahead — a known number is a plan, an unknown one is a panic.
- Set aside as you earn. A fixed slice of every payout into a separate tax pot (FreeAgent shows the building liability live). Around 25–30% works for most creators until we've tuned your exact rate.
- Reduce payments on account when income genuinely falls. They're based on an assumption; if next year is clearly slower — algorithm change, break, pivot — we can apply to reduce them. (Reduce too optimistically and HMRC charges interest on the shortfall, so this is a judgement call worth making with an accountant.)
The wall is only a wall if you can't see it. The creator tax guide has the full calendar, or get your own number before January names it for you.
