Native UK payroll
UK payroll, RTI-ready for HMRC.
PAYE and National Insurance to the penny, statutory pay, pension auto-enrolment — and your RTI submission (FPS & EPS) generated ready to file with HMRC on every pay run. Built UK-first, in the UK.
- ✓ PAYE & NI to the penny
- ✓ RTI ready for HMRC
- ✓ ERA 2025 changes mapped
United Kingdom payroll
What United Kingdom payroll actually has to do
The tax authority is HMRC. Currency is GBP. The Employment Rights Act 2025 — the changes that affect you, mapped into the platform and monitored.
- PAYE income tax
- Basic 20%, Higher 40% and Additional 45% bands, plus Scottish and Welsh variants applied automatically from the employee's tax code.
- National Insurance
- NI categories A through M, with employee and employer contributions to the penny — including the Apprenticeship Levy where it applies.
- Statutory pay
- SSP, SMP, SPP, ShPP, SAP, SPBP and SNCP all calculated to current HMRC rates.
- Student loans
- Plans 1, 2, 4, 5 and Postgraduate Loan — applied to the right thresholds for the tax year.
- Auto-enrolment pension
- Eligibility assessed continuously; £10,000 earnings trigger and qualifying earnings bands handled in line with Pensions Regulator rules.
- RTI to HMRC
- Mellow generates your Full Payment Submission and Employer Payment Summary as a ready-to-file RTI pack on every pay run — you file it to HMRC through PAYE Online, no manual number-crunching.
United Kingdom payroll — questions answered
Quick, honest answers — also exposed as structured data so AI search engines can read them.
- Does Mellow handle RTI for HMRC?
- Yes — Mellow generates your Full Payment Submission and Employer Payment Summary on every pay run, formatted and ready to file. You submit them to HMRC through PAYE Online — no manual number-crunching, no spreadsheets.
- Which pension providers does Mellow work with?
- Mellow handles auto-enrolment with any UK workplace pension provider, including NEST. Eligibility, qualifying earnings and re-enrolment cycles are all assessed automatically.
- Is the Employment Rights Act 2025 supported?
- Yes — ERA 2025 obligations are mapped into the platform, including day-one rights, the new zero-hours and guaranteed-hours rules, and fire-and-rehire restrictions.
- How does Mellow handle Scottish and Welsh tax rates?
- Tax codes drive the rates. Scottish (S prefix) and Welsh (C prefix) tax bands are applied automatically — including the Scottish six-band model.
- Does Mellow calculate directors' NI?
- Yes — directors' NI is calculated using the annual (cumulative) earnings method: NI is assessed on year-to-date pay against the annual thresholds, so directors with uneven pay are charged correctly.
Payroll, country by country
Mellow runs native payroll in six countries from one platform — the UK today, the rest coming soon.
Run United Kingdom payroll on Mellow
The full HR platform — payroll included — from £4 per employee per month. 14-day free trial. No credit card required.