UK TAX KNOWLEDGE · ENGLISH & 中文
UK tax. Let’s make sense of it.
Income beyond your salary, overseas tax or a letter from HMRC. Start with a practical question, understand the basics and find the official sources to check the detail.
01 / THE READING ROOM
Start with a question that matters to you.
How take-home pay is worked out: 2026 to 2027 tax year
Is your payslip a lot lower than the salary in your contract? Two things take most of the difference: Income Tax and National Insurance (NI).
Read the guideUnderstanding your tax code
Has your pay been fine for months, then suddenly a lot more tax comes off? Often the cause is your tax code. It tells your employer or pension provider how much of that income is tax-free.
Read the guideDo you pay tax on savings interest?
As your savings grow, so does the interest, and people start asking whether they need to pay tax on it. In fact, most people get some of their interest tax-free.
Read the guideMaking Tax Digital for Income Tax: what sole traders and landlords need to know
Who needs MTD, how to keep digital records and when quarterly updates are due.
Read the guideRenting out property in the UK: how rental income is taxed
Understand reporting thresholds, allowable expenses and the rules for mortgage interest.
Read the guideBrowse by topic
02 / TAX CALENDAR
Keep the key dates in view.
OCTOBER 2026 — JULY 2027 Common Self Assessment dates
Tell HMRC you need to file
If you need to file for 2025/26 and are new to Self Assessment or restarting, tell HMRC by this date, usually by registering.
Official guidance ↗Paper tax return deadline
The usual deadline for HMRC to receive a paper return for 2025/26.
Official guidance ↗Online return & payment
Online filing and the balancing payment for 2025/26 are due. The first payment on account for 2026/27 is also due, if required.
Official guidance ↗The 2026/27 tax year ends
Gather the income, expenses and records for this tax year, ready for the return.
Official guidance ↗Second payment on account
The second payment on account for 2026/27 is due, if required. Payments on account do not apply to every taxpayer.
Official guidance ↗
Sources checked: 1 October 2026. These are general dates; individual filing deadlines can differ, so check any HMRC notice. MTD quarterly updates have separate deadlines.
Read the MTD guide ↗03 / ABOUT THIS SITE
Built around sharing UK tax knowledge.
在英税务人 is a bilingual knowledge site about UK tax, focused on practical questions that arise when living or running a business in the UK.
The guides explain the concepts behind a practical question, the facts worth checking and where to read more. They help Chinese-speaking readers understand UK tax while keeping the English terminology within reach.
Each guide has a source-check date and links to official material. Articles provide general information, not professional advice based on your full circumstances.
04 / FOLLOW & CONTACT
Keep reading. Get in touch.
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Emails are used only to reply to you. Please do not send your UTR, National Insurance number or bank details in a first email.