5 Expensive Mistakes Self-Employed People Make in the UK [FREE GUIDE]

The 5 most expensive mistakes I see self-employed people make in the UK — and exactly how to avoid them. Free download from an AAT-qualified accountant in Tewkesbury with 15+ years of experience.

After more than fifteen years running Etaxpol Ltd, I have seen the same costly mistakes repeated again and again — not because people are careless, but because nobody ever explained the rules clearly. Each one of these can quietly cost you anywhere from £200 to £5,000+ a year.

This free 9-page guide gives you the exact fixes — no jargon, no fluff.

What's inside (9 pages):

✅ Missing HMRC deadlines — the 5 dates you must know, and how penalties grow day by day

✅ The Payments on Account shock — why your Year 2 bill is 150% of Year 1, and the tax pot rule that fixes it

✅ Mixing personal and business finances — why this becomes a real liability under MTD

✅ Allowable expenses you're missing — home office, mileage, phone, capital allowances

✅ Ignoring Making Tax Digital — what changed on 6 April 2026 and your full readiness checklist

All figures verified for tax years 2025/26 and 2026/27, including the Autumn Budget 2025 changes and the April 2026 MTD launch.

About the author

I'm Izabela Stanita, AAT-qualified accountant and founder of Etaxpol Ltd in Tewkesbury, Gloucestershire. Much of what's in this free guide is the same advice I share with clients at their first free consultation.

If you'd like personalised help after reading — get in touch at etaxpol.com or call 07858 436159.

Looking for the full picture? Check out The Self-Employed UK Tax Guide 2025/26 & 2026/27 — 46 pages, 16 chapters, full dates calendar and glossary, also available in this shop.

9 pages · PDF · Instant download · Works on any device · 100% free