Skip to main content

The bits no-one tells you.

In-depth, plain-English guides written for the people most accounting blogs ignore — UK side-hustlers, sole traders and CIS subbies.

Start here

Self-employed tax & National Insurance: how much you'll pay (2026)

How much tax a sole trader pays: the £12,570 Personal Allowance, the 20/40/45% bands, Class 4 National Insurance at 6%/2%, Class 2, and payments on account.

8 min read

Sole trader

5 guides

Allowable expenses for the self-employed: what you can claim (2026)

What counts as an allowable expense when you're self-employed — HMRC's nine categories, the £1,000 trading allowance, simplified expenses, and what you can't claim.

8 min read

CIS

4 guides

CIS Deduction Rates 2026: 30%, 20% & 0% Explained

CIS deduction rates explained: 30% if you're unregistered, 20% once registered, 0% with gross status. What each rate costs you — and how to move to a lower one.

8 min read

Side hustle

2 guides

Uber, Deliveroo & Bolt UK driver tax: claims and mileage (2026)

45p/25p per business mile, phone, vehicle costs, lease — what UK Uber, Deliveroo and Bolt drivers can claim, what they can't, and how to file Self Assessment.

7 min read

MTD ITSA

2 guides

HMRC Making Tax Digital letter: what it means and what to do (2026)

Got a letter from HMRC about Making Tax Digital for Income Tax? Why you've received it, whether it's genuine, and exactly what to do — and by when.

8 min read

Or skip the reading.

Varro turns every rule above into a guided return — categorised, calculated and filed.

Get started