Explain · Serious version
Income tax bands in terms of a flight of stairs
Income tax bands are a series of consecutive steps that determine the percentage of your earnings you must contribute to the public purse.
Your salary is essentially a person climbing a staircase, where every new landing represents a higher tax bracket. As you ascend past each threshold, the portion of your income within that specific bracket is taxed at a higher rate than the portion below it. You do not pay the higher rate on your entire salary, just the earnings that land on that specific, steeper step. It is a progressive climb designed so that those on the higher levels contribute a larger share, leaving the initial, lower steps for those just starting their ascent.
The complication arises when you get a pay rise that pushes you onto a higher step, the dreaded tax trap. You might find yourself frantically checking your P60, wondering if that extra hundred pounds is actually worth the sudden increase in friction on your climb. It is much like finding out the tread on your top step has been sanded down, meaning you have to work significantly harder just to keep your footing while the view from the top remains stubbornly the same.
The most taxing part of this journey is that the government occasionally adjusts the height of the risers without warning. One day you are comfortably navigating the middle landing, and the next, the stairs have been replaced with a steeper incline. You are essentially doing more cardio for the exact same altitude, arriving at the same destination feeling considerably more breathless and significantly poorer.
Where the analogy breaks downTax thresholds do not actually require physical exertion or provide a clear view of the ground floor.