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FinToolSuite
Updated April 20, 2026 · Income · Educational use only ·

Bonus vs Salary Increase Calculator

Compare a one-off bonus to a permanent raise.

Compare the lifetime value of a one-off bonus against a permanent salary increase over a set horizon. Enter alternative annual raise to see which wins.

What this tool does

This calculator models the total cash value of a one-off bonus against the cumulative value of an annual salary increase over a fixed period. Enter your bonus amount, the annual raise figure, and how long you plan to remain in the role. The tool sums the raise across your time horizon and displays both totals side by side, illustrating which option delivers greater gross income. The result depends most on the bonus size, the raise amount, and the number of years—a longer tenure generally favors the recurring raise. This comparison treats both as simple sums and does not account for tax, investment growth of the bonus, or changes in circumstances over time, all of which vary by individual situation and location. The output is for illustration only.


Enter Values

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Formula Used
One-off payment
Annual salary increase
Horizon in the role

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Disclaimer

Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.

A one-off bonus is simple: you get the cash once. A salary increase keeps paying every year you stay. The maths tips toward the raise once your horizon gets long enough. Example: a 5,000 bonus beats a 1,000/year raise in year one, but after five years the raise has paid 5,000 and kept going.

How to use it

Enter the bonus on the table, the salary bump being offered instead, and the number of years you expect to stay. The tool compares total cash received.

Decision comparator.

Quick example

With one-off bonus of 5,000 and alternative annual raise of 1,500 (plus years in role of 5), the result is 2,500.00. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.

Which inputs matter most

You enter One-off Bonus, Alternative Annual Raise, and Years in Role. Two inputs usually tip the answer one way or the other. Identify which ones matter most by flipping each value past a round threshold and watching whether the option with the lower calculated total changes.

What's happening under the hood

Sum the raise across the horizon and compare to the bonus. Ignores tax and investment of the bonus — both affect outcome but depend on personal circumstances. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.

Using this in pay negotiations

Knowing the exact figure behind a headline rate gives you specific numbers to anchor to in conversations about pay. "The difference is £X per month after tax" lands harder than "a couple of grand a year". Concrete numbers move decisions.

What this doesn't capture

Tax bands, pension contributions, student-loan deductions, and benefits-in-kind sit outside this calculation. The figure is the headline; your actual position depends on local tax rules and personal circumstances. Pair with a dedicated take-home calculator for the full picture.

Example Scenario

Comparing a £5,000 one-off bonus against a £1,500 annual raise over 5 years shows 2,500.00 provides greater total compensation.

Inputs

One-off Bonus:£5,000
Alternative Annual Raise:£1,500
Years in Role:5
Expected Result2,500.00

This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.

Sources & Methodology

Methodology

Sum the raise across the horizon and compare to the bonus. Ignores tax and investment of the bonus — both affect outcome but depend on personal circumstances.

Frequently Asked Questions

What about investing the bonus?
A bonus invested at compound growth can close the gap. This tool shows cash-to-cash comparison without that assumption so you see the baseline before factoring returns.
Does tax change the answer?
Both are usually taxed as income. The relative ordering rarely changes, but the absolute gap shrinks at higher marginal rates.
What if I might leave early?
Shorter horizons favour the bonus. Model the worst-case year count before picking.
Does the raise compound?
A flat raise does not compound on itself, but it raises the base for future percentage raises and pension contributions — a real benefit this calculator does not model.

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