The national contract
What should you be on?
Basic and supplements straight from the pay circular. Pick your grade and the shape of your week; the figure is what the contract says you should be paid before tax.
Before you find a payslip
What should you be on?
Basic and supplements straight from the national contract. The starting point — the checker tells you whether you were actually paid it.
What should you be on?
Basic and supplements, straight from the national contract. Before tax.
Less than full time? Set the PAs — that is how the contract expresses it. Six PAs is 60%.
Expected gross, before tax
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Gross only — tax, National Insurance and pension come off this. Put your payslip in and it checks what you were actually paid, line by line, against exactly these figures.
And then
This is what you should be paid. Were you?
A calculator tells you what the contract says. It cannot tell you whether payroll applied it, whether your tax code settled, or whether two posts between them gave you an allowance you were not entitled to. For that it has to read the payslip you were actually given.