Salary Increase Calculator | DailyTipsFinder

What this calculator does

A raise is easy to feel good about and surprisingly hard to evaluate. Eighty thousand naira sounds substantial until you notice it is a twenty three per cent increase on a salary that has not moved in two years, against inflation that has been running higher than that.

This calculator does three things. It converts the difference between your old and new salary into a percentage, which is the only form in which raises can be compared. It shows the difference in monthly and annual terms so you can see what it actually changes about your life. And if you enter an inflation figure, it tells you whether the raise is a real gain or simply a slower decline.

The table of target percentages is there for the conversation before the raise rather than after it. Knowing that a twenty per cent increase means a specific naira figure makes it far easier to ask for a number rather than a feeling.

How the calculation works

The percentage increase is the difference between the two salaries divided by the original salary, multiplied by a hundred. Dividing by the original figure rather than the new one is the step people get wrong, and it produces a noticeably different answer.

The real terms calculation is not simply the raise minus inflation, although that approximation is close enough at low rates. Properly, you divide one plus the raise by one plus inflation and subtract one. At the rates Nigeria has seen in recent years, the difference between the shortcut and the proper calculation is large enough to matter.

The break even salary is what you would need to earn simply to buy the same things as last year. It is a genuinely useful number in a review conversation, because it reframes a request from wanting more to maintaining position, which is a much easier case to argue.

The formula

Percentage increase = ((New salary − Old salary) ÷ Old salary) × 100

Real change = (((1 + Raise percentage) ÷ (1 + Inflation percentage)) − 1) × 100

Break even salary = Old salary × (1 + Inflation percentage)

A worked example

Someone on ₦350,000 a month is offered ₦430,000. The difference is ₦80,000, and dividing by ₦350,000 gives a raise of 22.86 per cent. That is ₦960,000 more over a year, or about ₦3,840 for every working day.

Now set that against inflation of 22 per cent. The real change is 1.22857 divided by 1.22, minus one, which is 0.70 per cent. Purchasing power improves by less than one per cent. To have stood still she would have needed ₦427,000, so the entire raise beyond that figure is worth ₦3,000 a month in real terms.

None of that makes the raise bad. It makes it honest. And it gives her something concrete to say in the next review: that maintaining her position requires an annual adjustment at inflation, and that any recognition of expanded responsibility has to sit on top of that.

Things worth knowing

Negotiate with a number

Going into a review asking for a raise invites a counter offer you did not choose. Going in with a specific figure, supported by market data and the inflation adjustment, changes the shape of the conversation entirely. The table above turns a percentage into the figure you actually say out loud.

Compare total package, not salary

Pension contribution, health cover, transport allowance, housing support, bonus structure and leave entitlement all carry real value. An offer that is five per cent lower on salary can be better overall. Price the components before comparing two offers.

Check take home, not gross

A raise crosses tax bands, so the increase in your account is smaller than the increase in your offer letter. Run both figures through the Salary After Tax Calculator to see what actually changes.

Track your market rate yearly

The largest salary jumps usually come from moving, not from internal reviews. Knowing what your role pays elsewhere is what makes an internal conversation credible, and what tells you when the conversation is no longer worth having.

Common mistakes to avoid

Dividing the increase by the new salary instead of the old one.
Comparing a monthly figure against an annual one.
Judging a raise in nominal terms without checking it against inflation.
Looking at gross increase without considering the effect on tax.
Ignoring changes to allowances and benefits that accompany a salary change.
Accepting a title change with no corresponding adjustment on the assumption it pays later.

Frequently asked questions

What is a good annual raise in Nigeria?

The honest benchmark is inflation, because anything below it is a real terms cut. Beyond that, increases vary enormously by sector, employer and individual performance. Rather than looking for a national average, compare against what your specific role pays in the current market.

How do I ask for a raise?

Come with three things: evidence of what you have delivered, data on what the role pays elsewhere, and a specific figure. The inflation break even from this calculator is a strong opening frame, because it separates maintaining your position from being rewarded for growth.

Why is my take home increase smaller than my raise?

Because PAYE is progressive, so part of the increase is taxed at a higher band, and because pension contributions rise with salary. Run both figures through the Salary After Tax Calculator to see the actual change in your account.

Should I take a pay cut for a better role?

Sometimes it is a reasonable investment, if the new role genuinely opens paths the current one does not. Work out the real cost first using this calculator, decide how long you are willing to carry it, and be honest about whether the promised trajectory is a plan or a hope.

How often should salaries be reviewed?

Annually at minimum, and more often during periods of high inflation. A salary that goes eighteen months without review in a high inflation environment has lost significant real value regardless of how the number looks.