WEEKLY PAY · 2026/27
£400 a week after tax
Convert a weekly pay figure into annual and monthly take-home pay. This is useful when the headline number is quoted per week and you need to compare it with rent, mortgage or household bills.
Where the money goes
- Gross weekly pay
- £400
- Annual gross equivalent
- £20,800
- Income Tax
- £1,646
- National Insurance
- £658
What this calculator does
It annualises a weekly pay figure, applies the current UK tax and NI rules, and then converts the result back into weekly and monthly take-home amounts. That keeps a weekly offer comparable with monthly budgeting.
Worked example
A £400 weekly salary becomes £20,800 a year before deductions. Under rUK rules the take-home is £18,496 a year; in Scotland it is £18,535 a year.
Weekly pay is often quoted in shift roles or temporary work, so the annual conversion is the key step before you compare it with full-time pay.
Related salary tools
Weekly pay is easier to read when it sits beside the take-home and net-to-gross pages in the same salary cluster.
Why this result may differ
A weekly quote is only one piece of the picture. Pay frequency, tax code, pension sacrifice, student loans and Scottish bands can all move the final net result.
QUICK ANSWER
What is this calculator?
Take Home Pay turns the inputs on this page into a transparent planning estimate for the selected jurisdiction.
How is it calculated?
It uses the displayed inputs, the GB-2026.27.1 ruleset and the assumptions shown beside the result. Different eligibility, timing or household details can change the outcome.
Example
Use the result as an illustrative scenario, then change one input at a time to compare the next decision. It is not an offer or personalised financial advice.
Official source
The source panel below links to the official guidance used for this tool.
SOURCES & REVIEW
Checked against official guidance
Last reviewed 2 August 2026 · Rule version GB-2026.27.1
Daily/weekly source monitoring. If a source changes, the affected rule set is reviewed before publication.
SOURCE LINKS
Every calculation keeps the official references visible so the numbers can be checked quickly.
WHY RESULTS DIFFER
Why two users can see different results
Why the result can differ
Different tax codes, payroll periods, Scottish bands, pension methods or lender assumptions can change the outcome.
One-off bonuses, pay frequency, overpayments, allowances and reliefs can move the result away from a simple annual estimate.
Where a rule depends on eligibility or legal status, this page shows an estimate and links to official guidance.
The explanation stays close to the result so users can compare the assumptions immediately instead of hunting through a separate policy page.
COMMON QUESTIONS
Frequently asked questions
Is weekly pay taxed differently?
The tax is still based on the annual rules, but payroll applies them by pay period.
Do bonuses change weekly pay?
Yes. Bonus and overtime can make one week look very different from another.
Why compare with Scotland?
Because Scottish Income Tax bands can change the take-home result for the same weekly gross pay.