Budget Calculator – Free UK Monthly Budget Planner

A budget does not mean restriction - it means knowing where your money goes so you can make deliberate choices about it. This calculator helps you map your monthly income against your spending categories, identify your true surplus, and see how different scenarios affect your ability to save, invest, or pay off debt.

It is useful at any life stage: whether you are trying to understand where your money disappears each month, planning for a major purchase, or testing whether you can afford to invest more. You can add custom categories, adjust amounts, and see your full cash flow in one place.

The budget calculator is often the first tool people use - because without knowing your numbers, it is hard to make any other financial decision with confidence. Once you know your surplus, explore the Investment Returns Calculator or Debt Payoff Calculator to put it to work.