Estimate combined UK household income, individual take-home pay, monthly budget capacity, and mortgage-affordability next steps.
A household income is not one salary doubled. Income Tax, National Insurance and student loan repayments are worked out on each person separately, on their own earnings, so two households with the same combined figure can keep very different amounts depending on how that figure is split between them. An even split uses two Personal Allowances and keeps both people lower in the bands.
Enter both incomes. Each person is taxed on their own earnings, so two incomes keep more of a total than one income does.
Income Tax and National Insurance are worked out for each person separately, never on the household total. A second earner brings a second Personal Allowance and a second basic-rate band with them, which is why two incomes keep more of a total than one income does. On these figures the household keeps £57,439 of £70,000. The same £70,000 earned by one person would keep £51,157 — £6,282 less. Moving pay between the two of them is a different question, and usually the answer is nothing: while both are inside the same band, the household keeps the same amount however the total is divided. It only starts to matter when the shift takes someone over a threshold — an unused allowance, the point National Insurance starts, or the higher rate. The figures use England, Wales and Northern Ireland rates, and assume both people are employed on a standard tax code with no pension contribution or student loan. Scottish rates change both of them.
| Tax/source year | 2026/27 |
|---|---|
| Region | England/Wales/Northern Ireland |
| Tax code basis | 1257L where the page uses PAYE defaults |
| Pension basis | No pension deduction unless this example says otherwise |
| Student loan basis | No student loan unless selected in this example |
| Gross pay | Employment pay before PAYE deductions and pension or loan settings. |
|---|---|
| Income Tax | Tax estimated from the selected tax-year, region, tax code and taxable-pay assumptions. |
| National Insurance | Employee NI is calculated separately from Income Tax and may not follow the same bands. |
| Pension and loans | Pension method and student-loan plan can change take-home pay and payslip comparisons. |
| Pension contribution | Changing the rate or method can change taxable income, National Insurance and take-home pay. |
|---|---|
| Tax code and region | Scottish Income Tax, Welsh codes, emergency tax or a non-standard tax code can move the result. |
| Student loan plan | A different plan can change deductions because each plan uses its own threshold and repayment rate. |
| Bonus, overtime or second job | Extra pay and payroll timing can make a real payslip differ from the smooth annual estimate. |
| Tax code | HMRC tax-code changes, K codes, BR/D codes, or emergency markers can change PAYE deductions. |
|---|---|
| Cumulative basis | Week 1, Month 1 or non-cumulative payroll can differ from a smooth annual calculator estimate. |
| Pension method | Relief at source, net pay and salary sacrifice can affect taxable pay and take-home pay differently. |
| Payroll timing | Bonus, overtime, arrears, refunds, cut-off dates and corrections can all move a single payslip. |
| Why is the tax on my payslip higher than expected? | payslip difference |
|---|---|
| What do the main payslip lines mean? | payslip explainer |
| What tax code should I use for modelling? | tax code |
| How much does pension reduce take-home pay? | pension comparison |
| How does this affect a monthly budget? | budget planning |
| What is not decided here | PayBreakdown does not decide payroll correctness, lender approval, benefit entitlement or employer compliance, and does not give regulated financial, mortgage, debt, tax, payroll or legal advice. |
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Household pages calculate each earner separately, combine the estimated monthly take-home pay, then connect that figure to budgeting, savings buffers and mortgage planning.
A budget starts from take-home pay, not gross salary. Compare the net monthly figure with the bills that actually land, the annual costs spread across the year, and anything irregular — repairs, gifts, travel, subscriptions. Monthly plans usually look healthier than reality because those are the parts left out. See how each deduction is worked out.
Dual-income examples for everyday household budgeting and affordability checks.
Higher combined-income examples for mortgage and savings planning.
Move from combined income to broad borrowing ranges.
Two incomes, benefits and shared commitments - the tools that look past one payslip.
It starts from the question on this page, shows the useful salary assumptions, and opens PayBreakdown's calculator so gross pay, take-home pay, tax, National Insurance, pension, student loan, region, and tax-code settings can be adjusted.
Yes. Open the calculator from this page to change salary, hours, pension, student loan, tax year, region, tax code, bonus, and other pay settings.
PAYE, National Insurance, pension, student loans and tax-code assumptions can differ by person, so separate estimates give a cleaner combined monthly take-home figure.
Last updated 2026-08-27. Checked by Sean Elsmore. Rates last checked against GOV.UK on 2026-08-07. Estimates are for planning and should be checked against official records where the decision matters.