How does the Net Salary Calculator work?

Net Pay = Gross Pay − Income Tax − National Insurance − Pension Then: Income tax bands apply progressively above the personal allowance Then: NI in UK: 8% on earnings £12,570–£50,270, 2% above Then: Pension contributions reduce taxable income.

Can you give an example of how to use the Net Salary Calculator?

Example: Input £35,000 gross (UK) gives a result of Approx £27,800 net after tax and NI.

Is the Net Salary Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Net Salary Calculator?

Our Net Salary Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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A net salary calculator estimates take-home pay after deducting income tax, national insurance or social security contributions, and pension contributions from gross salary.

Symbol	Name	Unit	Description
gross	Gross salary	$	Annual pay before deductions
fed_tax	Federal income tax	$	IRS withholding
fica	FICA (Social Security + Medicare)	$	Payroll taxes (15.3% employer+employee total)
net	Net (take-home) salary	$	Amount after all deductions

Gross Salary	Income Tax	NI	Net Pay (approx)
£20,000	£1,486	£592	£17,922
£30,000	£3,486	£1,392	£25,122
£40,000	£5,486	£2,192	£32,322
£50,000	£7,486	£2,992	£39,522
£60,000	£11,432	£3,154	£45,414

References

›HMRC tax rates 2025/26
›National Insurance rates — GOV.UK

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