How do I track my spending?
Recording where money actually goes for long enough to be useful, without turning it into a permanent admin task.
- Difficulty
- beginner
- Time
- 45 min
- Read
- 2 min
Short answer
Track everything for one month, using whichever method you will actually keep up — an app, a spreadsheet or notes on your phone. The point is a one-off picture, not a permanent habit. Most people find at least one category is roughly double what they assumed.
People consistently misjudge where their money goes, and no amount of thinking about it fixes that. A month of actual data does. This is a method for building a budget on facts rather than estimates; it is not financial advice.
What you'll need
- Bank statements or a banking app
- Spreadsheet or budgeting app (optional)
Step by step
- Pick a method you will actually maintain for a month.A banking app that categorises automatically is easiest. A spreadsheet gives more control. A note on your phone works too.
- Decide on six to eight categories, no more.Food, transport, bills, eating out, shopping, entertainment, other. More categories becomes admin and gets abandoned.
- Record everything for one full month, including cash.Cash is where tracking usually breaks down. Note it immediately or it disappears from the picture.
- Include annual and irregular costs by dividing them by twelve.Insurance, car tax, Christmas. Leaving them out makes a month look better than a year actually is.
- At the end of the month, total each category.Do not judge as you go — it changes behaviour and distorts the picture you are trying to capture.
- Compare the totals against what you expected.This is the actual output. The gap between assumption and reality is the useful information.
- Identify the two categories with the biggest gaps.Those are where changes will have most effect. Ignore the rest for now.
- Stop detailed tracking and switch to checking those two categories monthly.Indefinite detailed tracking gets abandoned. A monthly check on the categories that matter does not.
Tips
- A separate account for discretionary spending removes the need to track it at all — what is in the account is what is available.
- Most banking apps now categorise automatically. It is imperfect but it is good enough for a first picture and requires no effort.
- Track without changing behaviour for the first month. If you cut back while measuring, you measure the wrong thing.
Common mistakes
- Too many categories — It becomes data entry rather than insight, and gets abandoned within a fortnight.
- Forgetting cash and annual costs — Both distort the picture significantly, and annual costs are what break otherwise sound budgets.
- Tracking indefinitely — The value is in the initial picture. Ongoing detailed tracking is a chore that rarely survives.
Questions people ask
How long should I track spending for?
One full month gives a usable picture, and three gives a better one by smoothing out unusual months. After that, checking a couple of key categories monthly is enough.
Do I need a budgeting app?
No. Whatever you will maintain is the right tool — many banking apps categorise automatically, which requires no effort at all. The method matters far less than actually doing it.