METHOD & GUIDANCE
How this calculation works
Keep every input on the same time basis—for example, one month or one financial year—and do not mix cash figures with accrual figures. Tool IQ recalculates every output immediately; nothing you enter is saved or sent to us.
How to use the result
Model the first year and the recurring year separately. Replace the payroll-tax assumptions with the current figures that apply to the employee, employer and market.
Worked example
The opening UK case combines a £40,000 salary with user-entered employer NI, pension and benefits, then adds recruitment, equipment and initial training to show the first-year cost.
Common mistakes
- Treating gross salary as the full hiring budget.
- Using outdated payroll rates or ignoring available reliefs.
- Leaving recruitment, equipment, training, leave cover or workspace costs outside the decision.
Frequently asked questions
Is the true employee cost calculator free?
Yes. It requires no account and stores no calculation inputs.
Can I use the answer for a formal filing?
No. It is a planning estimate, not accounting, tax, legal or investment advice. Confirm material decisions with a qualified professional.
Which period should I use?
Keep every input on the same basis—for example, one month or one financial year. Use current figures first, then save a cautious scenario for comparison.
Why is first-year employee cost higher than recurring cost?
The first year can include recruitment, equipment, onboarding and initial training. Recurring years usually retain salary, employer payroll charges, pension or retirement contributions and benefits.
Does this calculate payroll deductions for an employee?
No. It estimates employer cost from the assumptions entered. It does not calculate an employee payslip, withholding, net pay or a payroll filing.
Continue the decision
- Cash Flow Forecast Calculator — Project closing cash from collections, payments and one-off movements.
- Break-even Revenue Calculator — Find break-even sales revenue from fixed costs and gross margin.
- Target Pricing Calculator — Find the price needed to achieve a target margin.
Popular small-business decision paths
- Test whether cash can support the hire
- Calculate the revenue needed to fund the hire
- Compare payroll software for a first employee
Get the free employee hiring-cost worksheet →
Optional email capture; this calculator remains free.
Official sources and checks
- HMRC: PAYE and payroll for employers — UK employer payroll responsibilities and current guidance.
Method reviewed 5 August 2026. Figures are illustrative and calculated locally in your browser. Official sources are linked where a rule or obligation affects how the result should be used. Read the Tool IQ calculation standard for our checking process, limitations and corrections policy.