Tax Bracket Calculator

How Progressive Tax Works

Progressive taxation means higher income is taxed at higher rates, but only the income within each bracket is taxed at that bracket's rate. This is one of the most misunderstood concepts in personal finance — many people incorrectly believe that moving into a higher tax bracket means all their income is taxed at the higher rate.

Nigerian Income Tax Bands

Nigeria's PAYE tax uses six progressive bands: 7% on the first ₦300,000, 11% on the next ₦300,000, 15% on the next ₦500,000, 19% on the next ₦500,000, 21% on the next ₦1,600,000, and 24% on income above ₦3,200,000. Note that these bands apply after deducting the Consolidated Relief Allowance.

UK Tax Bands 2025/26

The UK personal allowance is £12,570 (0% tax). The basic rate of 20% applies from £12,571–£50,270, the higher rate of 40% from £50,271–£125,140, and the additional rate of 45% above £125,140. The personal allowance tapers by £1 for every £2 earned above £100,000.

US Federal Tax Brackets 2025

The US has seven federal tax brackets for 2025: 10%, 12%, 22%, 24%, 32%, 35%, and 37%. The income thresholds depend on filing status (Single, Married Filing Jointly, Head of Household). State income taxes are separate and vary from 0% to over 13%.

Marginal vs Effective Tax Rate

Your marginal rate is the rate on your next dollar of income — it's the highest bracket your income reaches. Your effective rate is total tax divided by total income, reflecting the blended rate across all brackets. For example, a UK earner making £60,000 has a 40% marginal rate but roughly a 21% effective rate.

Tax Planning

Understanding your tax bracket enables strategic planning. Pension contributions, charitable donations, and other allowable deductions can reduce your taxable income, potentially keeping you in a lower bracket. However, always prioritize earning more — progressive taxation ensures you always take home more even when you cross into higher brackets.