Tax Year Comparison Calculator

See your income tax liability across every tax year this site tracks, for the same income

Pakistan's tax slabs, rates, and thresholds change nearly every year through the annual Finance Act, which means the "right" answer to a tax question can differ meaningfully depending on which tax year you're actually asking about — this calculator lets you compare your liability across every year this site tracks side by side.

Why year-over-year comparison matters

A slab boundary, a rate, or an exemption threshold that applied last tax year may have shifted this year — sometimes up, sometimes down, sometimes restructured entirely with new brackets. For anyone doing forward planning (budgeting for next year's take-home pay, deciding whether to time an asset sale before or after a Finance Act change, or simply understanding why this year's tax bill differs from last year's on similar income) seeing both years' rules applied to the same income figure side by side is far more useful than looking up either year's rules in isolation.

A worked example

Identical income run through two consecutive tax years' slab tables can produce a genuinely different liability — sometimes by a meaningful margin — purely because of where bracket boundaries moved, independent of any change in your actual earnings. Without a direct comparison, it's easy to misattribute a change in your tax bill to a change in your income when the real driver was a change in the law.

How this connects to your other tax planning

This comparison tool pulls from the same underlying slab data as the Income Tax Calculator and other year-specific calculators across this site — it doesn't introduce a separate set of numbers, it just lets you view multiple years' worth of the same official data at once. If you're specifically deciding whether to accelerate or delay a transaction that's sensitive to a tax-year boundary (a property sale near a Capital Gains Tax holding-period milestone, for instance), this is the tool to check both scenarios before committing to a timeline.

Common mistakes

People sometimes assume their tax situation is stable year to year unless their income changes, when in reality the law itself is a moving target — reviewing your assumptions against the current tax year's actual rates at least once a year, rather than carrying forward a mental model from a previous year, avoids being caught off guard by a Finance Act change you didn't track.