Net to Gross Calculator — Reverse Deduction
Know your take-home but need to quote a gross price or salary? Enter the net amount and the total deduction rate and the calculator works backwards to give you the gross figure.
%
Pre-deduction amount that yields the net value entered
- 1
Deduction complement
1 − 30% ÷ 100 = 0.7The fraction of gross that remains after the deduction rate is applied. - 2
Gross amount
50,000 ÷ 0.7 = 71,428.57
How does this calculator work?
Gross = Net ÷ (1 − deduction rate). Enter your take-home amount and the blended deduction percentage (tax + NI + any other withholdings); the calculator reverses the deduction to find the gross amount you need to negotiate or invoice before deductions are applied.
Formula
How this is calculated
When a deduction rate is applied to a gross figure, the net result is Gross × (1 − rate). Solving for Gross gives the reverse formula: Net ÷ (1 − rate). For example, if your take-home is £50,000 and deductions total 30%, the gross is £50,000 ÷ 0.70 = £71,428.57. This is different from simply adding 30% to the net, which would give the wrong answer because the rate is expressed as a percentage of the gross, not the net.
The "total deduction rate" is the combined percentage of all things withheld from gross — income tax, employee national insurance or social security contributions, pension contributions or any other payroll deductions — expressed as a single number. If your country has a 20% income tax band and 10% NI, enter 30. If you are converting a price excluding VAT to the VAT-inclusive price and you know the VAT rate, use an equivalent approach (price ÷ (1 + VAT rate) for the reverse direction, or use the dedicated VAT calculator).
The deduction rate must be between 0% and 99%; a rate of 100% or more would imply zero or negative gross, which has no real meaning. For highly progressive tax systems, the marginal effective rate changes at income thresholds, so the result here is most accurate when the deduction rate represents the blended average across the whole gross.
Frequently asked questions
Because the deduction rate is applied to the gross, not the net. Adding 30% to the net multiplies the net by 1.3, but the correct gross requires dividing the net by 0.7 — the difference becomes significant at high rates.
Add all percentage-based payroll deductions: income tax (use your marginal or effective rate), employee national insurance or social security, and any mandatory pension contribution. Do not include fixed-amount deductions.
This calculator solves for the pre-deduction base when the rate is applied to the gross. For VAT, that is not quite the same as removing VAT from an inclusive price (where the rate is applied to the exclusive price). Use a dedicated VAT or sales-tax calculator for those cases.
Also known as
TG we-Calculate Editorial Team. (2026). Net to Gross Calculator — Reverse Deduction [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/net-to-gross-calculator
TG we-Calculate Editorial Team. "Net to Gross Calculator — Reverse Deduction." TG we-Calculate. 2026. https://we-calculate.com/calculator/net-to-gross-calculator.
TG we-Calculate Editorial Team, "Net to Gross Calculator — Reverse Deduction," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/net-to-gross-calculator
@misc{wecalculate_net_to_gross_calculator, title = {Net to Gross Calculator — Reverse Deduction}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/net-to-gross-calculator}}, year = {2026}, note = {TG we-Calculate} }
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