Where Your Money Goes

The gap between what you think and what is true

Almost everyone underestimates their own spending. Not by a little — household budgeting research consistently finds people underestimate discretionary spending by a wide margin. The reason is simple: large payments are memorable, and small ones are not. You remember rent. You do not remember eleven separate food deliveries.

So the first step is not budgeting. It is measurement.

Pull one month of real numbers

Open your bank and card statements for the last full month and sort every transaction into three buckets:

Bucket	What belongs there	Examples
Fixed	Same amount, same date, hard to change quickly	Rent, insurance, phone plan, loan payments
Variable	Necessary, but the amount moves	Groceries, fuel, utilities
Discretionary	Genuinely optional	Eating out, subscriptions, clothes, entertainment

Do not estimate. Use the actual statement. The number you find is the number you are working with, not the number you wish you had.

The one calculation that matters

Monthly surplus = Income - (Fixed + Variable + Discretionary)

If that figure is positive, you have something to direct on purpose. If it is negative, you now know precisely how negative, which is far more useful than a vague sense of falling behind.

Why this is uncomfortable, and why to do it anyway

Seeing the total spent on takeaway or subscriptions can feel like an indictment. It is not. It is a starting position. Nobody optimises a number they have never looked at, and every worthwhile change in the rest of this course depends on having one honest month in front of you.

Try this now: categorise last month and write down your surplus. One number. You will use it in every lesson that follows.