Payroll & RTI
Run payroll, send payslips, file RTI. No payroll bureau needed.
Add employees, run payroll, generate payslips, post to GL, generate FPS XML for HMRC RTI — all in a single product. Tax codes, NI categories, pension, monthly or weekly cadences, leavers, year-to-date — handled.
In short
AccountsOS includes a full payroll engine: employee management with tax codes and NI categories, monthly/weekly payroll runs with PAYE/NI/pension calculations, individual payslips emailed automatically, GL posting (wage expense + PAYE liability + NI liability + pension liability), and FPS (Full Payment Submission) XML generation for HMRC RTI compliance.
Free during Early Access — no credit card required
Everything Payroll & RTI can do
Employees
- Add and edit employees: start date, salary, tax code, NI category, NI number
- Pension contributions with provider details
- Monthly or weekly pay frequency
- Status: active, on leave, terminated
- End-date tracking for leavers (P45 generation on roadmap)
- Multi-trading-entity employee assignment
Running payroll
- One-click payroll run for all active employees
- PAYE calculated using current HMRC tax tables
- NI calculated per category (A, B, C, H, J, M, Z)
- Pension contributions deducted
- Net pay calculated
- Year-to-date figures tracked across the tax year
Payslips
- Per-employee PDF payslip
- Emailed automatically via Resend
- Branded with your company logo
- YTD figures shown
- Tax code, NI category, pension shown
RTI submission
- FPS (Full Payment Submission) XML generated for each run
- RTI-compliant format
- EPS (Employer Payment Summary) on roadmap
- Year-end FPS handling
GL posting
- Wage expense posted automatically
- PAYE liability account credited
- Employee NI liability credited
- Employer NI cost recognised
- Pension liability tracked
Capabilities at a glance
Employee management with tax codes, NI categories, pensions
Monthly and weekly payroll runs
Automatic PAYE / NI / pension calculations
Per-employee PDF payslip with email delivery
FPS XML for HMRC RTI
Auto-post to GL (wages, PAYE, NI, pension)
YTD payroll figures
Tax-year aware (current thresholds always live)
How It Works
Add employees
Name, start date, salary, tax code, NI category, pension. Takes 2 minutes.
Run payroll
One click — generates PAYE/NI/pension figures, payslips and journals.
Payslips emailed
Each employee gets their PDF payslip in their inbox automatically.
FPS to HMRC
Download the FPS XML or (when live) submit directly. GL is already updated.
By the numbers
Real-world Use Cases
Single-director limited
Pay yourself the optimal director salary, generate payslip, FPS and GL — under 60 seconds a month.
Small team of 3–5
Onboard new starter, set monthly cadence, payroll runs the same day each month with no chasing.
Holiday cover
Mark an employee on leave; payroll skips them automatically until they're back.
Plays nicely with
HMRC RTI
Live (XML)FPS XML generation; direct submission on the next milestone.
Resend
LivePayslip email delivery.
Why founders pick this over the spreadsheet
No separate payroll bureau bill
RTI-compliant from day one
Payslips look professional out of the box
GL stays accurate without separate journal entries
YTD figures always available without rebuilding
Frequently Asked Questions
Is this RTI-compliant?
Yes — every payroll run generates a Full Payment Submission XML in HMRC's required format. Direct submission to HMRC is the next milestone; today you upload the FPS via HMRC's online service.
Does it handle pensions?
Yes — set the pension provider, contribution rate (employer + employee), and pensions are deducted on every run with the liability tracked in the GL.
What about year-end?
YTD figures are tracked across the tax year and roll over automatically on 6 April. P60 generation is on the immediate roadmap.
Can I run weekly payroll?
Yes — monthly and weekly cadences both supported. Mix them across employees in the same company.
Tax code changes mid-year?
Update the employee's tax code from any payslip onwards. The change is captured in the audit log.
Multiple companies?
Yes — assign employees to specific trading entities. Each entity has its own payroll cycle and HMRC PAYE reference.
Explore more of AccountsOS
Salary & Dividend Optimiser
Take the most home, legally. We do the maths every payroll cycle.
Dividends
Declare, document, pay — compliantly.
Financial Reports
P&L, Balance Sheet, Trial Balance, Cash Flow Forecast — instant, accurate, exportable.
Corporation Tax
See your CT bill in real time. Generate the workpaper for filing.
Director's Loan Account & S455
Stay out of the S455 trap. The DLA stays in the green or you hear about it.
Ready to try Payroll & RTI?
Get started with AI-powered accounting for your UK limited company.
Get Started FreeFree during Early Access — no credit card — cancel anytime