PayBreakdown

IR35 calculator

Plan contractor take-home pay for IR35 and off-payroll working scenarios, including inside IR35, outside IR35, umbrella, and day-rate comparisons.

How IR35 is worked out

IR35 and off-payroll working planning needs careful status-aware pay modelling. This page keeps contractor take-home pay, inside IR35, outside IR35, umbrella pay, deemed employment, day rate, and PSC comparisons clearly caveated.

A worked example

On £35,000 a year with a standard 2026/27 tax code, no pension, no student loan, the figures work out like this. Open a calculator to put your own numbers in.

Gross salary£35,000
Take-home a year£28,720
Take-home a month£2,393
Take-home a week£552

Checks worth making on IR35

Assumptions used here

Assumptions used here
Tax/source year2026/27
RegionEngland/Wales/Northern Ireland
Tax code basis1257L where the page uses PAYE defaults
Pension basisNo pension deduction unless this example says otherwise
Student loan basisNo student loan unless selected in this example

Source and methodology context

Source and methodology context
What is not decided herePayBreakdown does not decide payroll correctness, lender approval, benefit entitlement or employer compliance, and does not give regulated financial, mortgage, debt, tax, payroll or legal advice.

What the IR35 estimate assumes

The figures on this page are worked from IR35, using the values below. Open the calculator if your example salary differs.

Example salary£35,000 annual gross

Current modelling boundary

IR35 planning needs cautious pay modelling and source checks. This page does not replace CEST or decide employment status for tax, which turns on the contract and on how the work is actually carried out.

  • Employment status for tax is decided contract by contract, so a figure worked out for one assignment does not carry over to the next.
  • Outside-IR35 limited-company and dividend modelling is not implemented.
  • Nothing here recommends an umbrella company, agency or accountant, and no result is approval of a contract or of a status determination.

Status and advice caveats

Contractor outputs are scenario estimates only. PayBreakdown does not decide IR35 status, umbrella compliance, employment status, legal position, tax filing duties, or the best provider structure.

  • PayBreakdown does not replace CEST and does not decide whether a contract is inside or outside IR35.
  • IR35 and off-payroll status is contract-by-contract and can depend on both contract terms and actual working practices.
  • Client, agency, worker, fee-payer and intermediary responsibilities can differ under off-payroll working rules.
  • Umbrella workers are employed by the umbrella company; umbrella pay estimates are planning estimates only.
  • Umbrella pay depends on the assignment rate, umbrella margin, holiday pay treatment, pension, student loans, expenses, payroll period, and legally required deductions.
  • Outside-IR35 limited-company take-home needs corporation tax, expenses, VAT, salary, dividends, pension and accountancy assumptions that are not fully modelled in this module.
  • Student-loan treatment can differ in some off-payroll scenarios and should not be simplified into a single deduction rule.
  • Use HMRC CEST, official GOV.UK guidance, payroll, agency or professional advice where needed.
  • This is not tax, legal, employment, accounting, payroll or financial advice.

What would change this figure

This estimate is worked out on £35,000 annual gross. Change any of those and the take-home figure moves; pension method and student loan plan usually move it most. A payslip can differ from any calculator because payroll works pay period by pay period, so a tax-code change, a bonus, arrears or a refund can land in one month and not the next. See how each deduction is worked out.

Official sources

Income Tax rates and Personal AllowancesNational Insurance rates and categoriesStudent loan repayment thresholdsPension tax reliefOff-payroll working and IR35 guidanceUnderstanding off-payroll workingGOV.UK umbrella companies guidance collectionGOV.UK work out pay from an umbrella companyGOV.UK Check Employment Status for Tax (CEST)

Frequently asked questions

Does IR35 Calculator decide IR35 status?

No. PayBreakdown does not decide IR35 status and does not replace CEST. Status can be contract-by-contract and may depend on contract terms and actual working practices.

Does PayBreakdown model outside-IR35 limited-company take-home?

Not in full. Working out what a limited company actually leaves you with means Corporation Tax on the profit first, then the split between a small salary and dividends, and then dividend tax on top — before VAT treatment, allowable expenses, pension contributions and accountancy fees are accounted for. The director salary and dividend calculator covers the salary-and-dividend part; the rest depends on your own accounts.

Are umbrella pay results final payroll figures?

No. Umbrella estimates are planning estimates only. Real pay can differ because of the umbrella margin, holiday-pay treatment, pension, student loans, payroll period, expenses and provider-specific deductions.

Is this tax, legal, employment or accounting advice?

No. It is not tax, legal, employment, accounting, payroll or financial advice. Check official GOV.UK sources, HMRC CEST, payroll, agency or professional guidance where needed.

Last updated 2026-08-27. Checked by Sean Elsmore. Rates last checked against GOV.UK on 2026-08-07. Estimates are for planning and should be checked against official records where the decision matters.