Side Hustle & Online Selling
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Do I Need to Pay Tax on My Side Hustle Income?
The essential guide — the £1,000 threshold, what counts as trading, and exactly what to do if you're over it.
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The £1,000 Trading Allowance Explained
How it works, what income it covers, when to claim expenses instead — and when it actually costs you money to use it.
Etsy Tax UK: What Sellers Need to Know
When Etsy income becomes taxable, what you can deduct, and how HMRC gets your data directly from the platform
Vinted Tax UK: Do You Actually Owe Tax on Vinted Sales?
Most casual sellers owe nothing — the honest truth about HMRC data sharing and the personal items rule
Online Selling Tax UK: eBay, Etsy, Vinted & More
Which platforms report to HMRC, how the £1,000 allowance applies across all income sources combined
Know your situation? File directly with HMRC.
SubmitFox submits your Self Assessment in under 20 minutes. Start free — pay only when you submit.
Filing & Deadlines
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File Your Self Assessment Tax Return Online
What you need, how to prepare, and how SubmitFox submits directly to HMRC in under 20 minutes — no accountant needed.
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Late Tax Return: What to Do If You've Missed the Deadline
Penalties, how they escalate day by day, how to appeal — and the one thing to do right now to stop the clock.
Filing Self Assessment Without an Accountant
Accountants charge £150–£500. Here's exactly when you genuinely need one — and when you definitely don't
Last Minute Self Assessment: Still Time to File
Deadline approaching and you haven't started? Here's exactly what to do right now, step by step
Self Assessment Deadline UK: All the Key Dates for 2024/25
Registration, paper, online, and payment on account deadlines — every date in one place
Your Situation
⭐ New to this?
Self Assessment for Beginners: Your Complete First-Time Guide
Never filed before? Start here — what Self Assessment is, whether you need to file, and exactly how it works from scratch.
Who Needs to File a Self Assessment Tax Return?
Every trigger that means you must file — self-employment, rental income, dividends, Child Benefit and more, in one clear table.
Landlord Tax Return UK: A Complete Filing Guide
What landlords must declare, every deductible expense, and the Rent a Room rules explained
Director Self Assessment: Filing Guide for Company Directors
Why every director must file, how salary and dividends are taxed differently, and how CT600 interacts
Self-Employed Income UK: Tax Guide for Sole Traders
What counts as income, every expense you can claim, and the payments on account trap that catches first-timers
Ready to file? Start for free.
SubmitFox submits your Self Assessment directly to HMRC. You only pay when you're ready to submit.