Simple Ways to Track Income, Expenses, and Savings
Three approaches to financial tracking — from a basic spreadsheet to advanced apps — and how to pick the right one for you.
You can't change what you don't measure. But "measure everything" is a fast path to giving up. The trick is to track the RIGHT things at the RIGHT level of detail.
What's actually worth tracking
You need three numbers, monthly:
- Total income — everything that landed in your accounts
- Total spending — everything that left them (excluding savings transfers)
- Net savings — income minus spending
Categories are optional. Most people over-categorize and then give up. Start simple: track the top 3 numbers for 2–3 months, then add categories if you want.
Approach 1: The 10-minute weekly spreadsheet
Best for: people new to tracking, or who want minimum overhead.
Open a Google Sheet. 5 columns:
| Date | Description | Amount | Type | Notes |
|---|---|---|---|---|
| 2026-05-01 | Salary | +5,500 | Income | |
| 2026-05-02 | Rent | -2,000 | Fixed | |
| 2026-05-03 | Groceries Coles | -185 | Variable | |
| 2026-05-05 | Netflix | -25 | Subscription |
Once a week, open your bank app, copy the past 7 days of transactions. 10 minutes. You'll see patterns within a month.
Approach 2: The bank-app-only method
Best for: people whose bank has good categorization.
Most modern banking apps (Up, Revolut, Monzo, Starling, ANZ Plus, Chase) automatically categorize transactions and show you a monthly summary. Your "tracking system" is logging into your bank once a week.
Pros: zero extra tools, real-time, automatic. Cons: categorization isn't always great (transfers between accounts look weird), and it locks you in to one bank's view.
Approach 3: Aggregator apps
Best for: people with multiple accounts, complex finances, or who like data.
Tools like YNAB, Pocketbook (AU), Pocketsmith, Money Manager EX, or Mint (US, sunsetting) pull data from all your accounts into one dashboard. You categorize once, then look at trends across months/years.
Pros: complete picture, budget vs actual, trend graphs. Cons: $5–$15/month for the good ones, data security considerations (you're giving access to your bank logins via Plaid/Yodlee), takes 2–4 hours to set up properly.
The 3-account system (no app required)
If you don't want to track manually, use account structure to enforce categories:
- Income account — everything lands here
- Fixed costs account — automatic transfer of monthly fixed bills (rent, utilities, insurance)
- Spending account — everything else, with a weekly allowance
The amount left at end-of-month in account 1 is your savings. No spreadsheet needed.
Common tracking mistakes
- Tracking too many categories — 20 categories ensures you'll quit. Start with 5: housing, food, transport, fun, other.
- Tracking obsessively — daily logging is overkill. Weekly is enough.
- Tracking forever without acting — the point of tracking is to CHANGE behaviour. If you've tracked for 3 months and changed nothing, you're collecting data, not budgeting.
- Tracking only when things go wrong — most people start tracking after a financial scare, then quit when things normalize. Make it a permanent habit.
- Not tracking income — easy to miss, but irregular income (bonuses, gifts, refunds) skews everything if uncounted.
What to do with the data
Track for 2–3 months without trying to change anything. Then look for patterns:
- Categories where you spent more than you'd guess → likely cuts
- Categories where you spent less than expected → can you redirect?
- Recurring small charges that add up → audit those subscriptions
- Cash-flow timing problems → maybe move some bills to align better with payday
Tracking that doesn't lead to action is just journaling.
The bottom line
The best tracking system is the one you'll actually use. A 10-minute weekly spreadsheet beats a sophisticated app you abandon after a month. Start simple, then upgrade only when you genuinely outgrow it.