Payroll & Workforce Management in United Kingdom

What running payroll in United Kingdom costs and requires

The United Kingdom applies a 25% main rate of corporation tax on profits above £250,000, with a 19% small profits rate below £50,000 and marginal relief tapering the effective rate between the two bands — a structure unchanged for the 2026/27 financial year, but one where profit within the marginal band is taxed at an effective rate of approximately 26.5% on each additional pound, higher than either headline rate. VAT is charged at a standard 20%, with a £90,000 registration threshold — among the more straightforward tax regimes across HTLC's country practices.

Operating in the UK combines a corporation tax structure with a punitive marginal band between £50,000 and £250,000 profit with a post-Brexit immigration regime that now checks salary compliance pay period by pay period rather than annually.

What sits on top of gross salary

National Insurance — 15% on earnings above the £5,000/year secondary threshold (frozen until April 2028) — this is a direct cost the employer budgets on top of gross pay for every hire, not a deduction from it.

• Sponsor licence required for every non-UK hire — — including EU nationals, who lost automatic right to work when free movement ended on 1 January 2021; without a licence there is no legal route to employ them
• Per-pay-period salary check from 8 April 2026 — — sponsors must show the Skilled Worker salary threshold is met in each pay period, not as an annual average, closing the gap that bonus- or commission-weighted packages previously used
• Marginal relief band (£50,000–£250,000 profit) — — the effective corporation tax rate on income within this band reaches approximately 26.5%, higher than either the 19% or 25% headline rates, making profit-timing genuinely consequential near the boundary
• Audit exemption thresholds — effective from 6 April 2025 — small company: turnover < £15M, gross assets < £7.5M, < 50 employees (2 of 3 criteria, in both the current and preceding financial year)

The statutory floor for United Kingdom

£12.71/hour — National Living Wage, ages 21+ (from 1 April 2026); £10.85 ages 18–20; £8.00 under-18s and apprentices. Underpaying the statutory floor exposes the employer to fines and back-pay claims, and should be checked against any role before an offer is made — thresholds are typically revised annually.

Standard cycle and documentation

Payroll in United Kingdom runs on a monthly cycle, in arrears. Payslips must itemize gross pay, statutory deductions, and net pay — incomplete or incorrect payslips are exactly what a labour or social security audit checks first, so the format is a compliance requirement, not a formality.

Employer obligations and deadlines

Corporation Tax (CT600) payment due within 9 months and 1 day of the accounting period end; the CT600 return itself due within 12 months of the period end — two separate deadlines.

Employer registration runs through the Companies House, with separate HMRC registration for Corporation Tax required within 3 months of starting to trade, typically taking 24 hours for standard online incorporation; 8–10 days by post.

Frequently asked questions