The Side Hustle Tax Return Pack – UK 2025/26 (Guide + Tracker)

Got side hustle income and dreading your first tax return? This plain-English pack takes you from "do I even need to do this?" to a filed UK Self Assessment return, with no confusing tax words.

The online deadline for the 2025/26 tax year is 31 January 2027.

WHO IT'S FOR

• Etsy, eBay, Vinted, Depop and Amazon sellers

• Freelancers, tutors, pet sitters and anyone paid for a service

• Content creators

• Anyone filing Self Assessment for the first time because of side income

WHAT'S INSIDE THE 13-PAGE PDF

✓ Do I need to file? A simple 3-question check (including trading vs decluttering)

✓ What the Etsy / eBay / Vinted reports to HMRC actually mean

✓ Every key 2025/26 number on one page

✓ Step-by-step checklist: register, gather records, work out your numbers, file and pay

✓ What you can and can't claim, by type of side hustle

✓ The £1,000 trading allowance vs real expenses, explained

✓ 3 worked examples with real numbers

✓ Payments on account and late penalties explained

✓ Getting ahead for next year, including the Making Tax Digital changes from April 2027

✓ Printable monthly records log and a "my numbers" worksheet

BONUS: TRACKER SPREADSHEET (Excel / Google Sheets)

✓ Log income, expenses and business mileage (45p/25p worked out for you)

✓ Automatically totals everything for the tax year

✓ Compares your real expenses with the £1,000 trading allowance and tells you which is better

✓ Estimates your income tax and Class 4 National Insurance so you know what to put aside

✓ Month-by-month view

DETAILS

• Instant download: PDF (A4, printer-friendly low-ink design) + .xlsx spreadsheet

• Works in Excel and Google Sheets

• Based on GOV.UK guidance for the 2025/26 tax year, checked November 2026

• Income tax figures are for England, Wales and Northern Ireland (Scottish income tax bands differ; everything else applies)

PLEASE NOTE

This is a general guide, not personal tax or financial advice, and it doesn't replace an accountant. The spreadsheet gives an estimate. HMRC's own calculation when you file is the official figure. If your situation is complex, please speak to a qualified adviser.

This product was created by me with the help of AI tools. I checked the content against GOV.UK guidance.

For personal use only. Please don't share or resell the files.