Choose Auto Calculate when you want PaystubX to estimate YTD for you. If you have real earlier payroll, use one of the other three methods instead.
Auto Calculate is an estimate, not imported payroll history. For entered balances, Net = Gross − employee taxes and deductions.
View more — exact figures, example and compliance notes
Where these numbers come from
Open the P11 deductions working sheet from your previous provider, or Total pay to date and Total tax to date on the last payslip. Use only payroll run under this same employer/legal entity and PAYE scheme, from the start of this tax year (6 April – 5 April) through the actual check/payment date of the last payroll processed by the previous provider. That payment date — not the work-period end date — is your cutoff date. Do not add wages from another employer the worker previously worked for.
Choosing between the methods
- Auto Calculate keeps the original PaystubX behavior. It estimates YTD as the current payroll repeated through the selected pay date and writes no opening or historical ledger records.
- Carry forward keeps stub and ledger YTD right without recreating each payday, and works best when you have the tax components too.
- Import history uses actual payroll-by-payroll records. Never enter the same amounts as both opening balances and history.
- Start at zero applies per employer — a worker's pay from a different employer does not belong in this employer's ledger.
Worked example
Today is Tuesday 18 August 2026. Here is what each choice means.
1. Auto Calculate — PaystubX estimates it
If the current monthly payroll is £2,000 and this is the 8th monthly pay period, PaystubX estimates £16,000 gross YTD. Nothing is entered manually and no prior ledger record is created.
2. Switching from another provider — type the totals once
- Previous payroll cutoff date 14/08/2026 (their last payday)
- First PaystubX payroll date 21/08/2026 (your first payday)
- Gross YTD 20,000.00
- Taxes & deductions YTD 5,000.00
- Net pay YTD 15,000.00 (20,000 − 5,000 — leave blank and PaystubX fills it)
- Employer-paid amounts YTD: copy the actual employer National Insurance and employer pension amounts from the prior report; do not estimate them from gross pay (reporting only; never subtract from employee net)
Your next payroll of £2,000 then shows 22,000.00 gross YTD on the stub.
3. Importing history — list the old paydays instead
Same worker, same £20,000, but each earlier payday gets its own row: 07/08/2026 and 14/08/2026, £10,000 gross and £2,500 deductions each. The rows add up to the same 20,000 gross and 5,000 deductions, so do not also fill the totals in method 1 — the pay would count twice.
4. Starting fresh — leave everything blank
If this employer has paid this worker nothing this tax year, skip the totals and the history. Your first PaystubX payday 21/08/2026 of £2,000 is the whole year so far, so the stub reads 2,000.00 gross YTD and grows from there.
Records and filings
For PAYE/RTI, also retain the P11/payroll record and prior FPS/EPS submission records, including tax-year-to-date pay and tax and the employee/employer National Insurance details. Saving a PaystubX opening balance does not by itself transfer or prove which provider is responsible for prior tax filings, payments or year-end forms.