How much can I earn before paying National Insurance as a freelancer?

As a freelancer in the UK for 2026, you've got what's called the National Insurance threshold to think about. Right now the threshold for Class 2 NI is around £12,570 a year, though I'd double-check the current figures since these do change. If you're earning below that, you generally don't need to pay Class 2 contributions. However, there's a bit of a catch - even if you're below the threshold, you might want to pay voluntarily because it helps protect your state pension eligibility. That's something I figured out the hard way after years of irregular income with the fire service side work I used to do.

For Class 4 contributions, that's where it gets a bit more complicated. You only start paying Class 4 if your profit exceeds around £11,908 (again, check the current year figures), so there's some overlap there. The thing is, you'll still need to register as self-employed and file a tax return even if you're under the thresholds, especially if you're earning decent money. HMRC takes that pretty seriously these days.

My advice after dealing with this stuff myself - keep proper records from day one, track everything, and honestly just speak to a tax advisor or accountant if you're making a reasonable amount. It's probably worth the cost to get it right, trust me. Especially if you're running a proper business rather than just doing odd jobs. The early morning runs help me think through this stuff sometimes, but I usually just call someone who actually knows what they're doing rather than guessing.