Where Does My Salary Go? A 30-Day Experiment to Find Out

Where Does My Salary Go? A 30-Day Experiment to Find Out

The short answer: track every rupee you spend for 30 days, sort each one into a handful of categories, and compare the totals on day 30. Most people find that three or four categories explain most of the gap between "I earn well" and "I have nothing left." You don't need a budget yet. You only need the facts.

This guide gives you the full experiment: what to do each week, a worked example with real numbers, how to read your results, and what to change afterwards.

In this guide

1. Why a 30-day experiment works
2. Before you start: 15-minute setup
3. The four-week plan
4. Worked example: ₹45,000 take-home salary
5. How to read your results
6. What to do after day 30
7. Common mistakes
8. FAQ

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Why a 30-day experiment works

Most of us carry a rough story about our spending ("rent is the big one, the rest is small"). Month-end balances rarely match that story, because the money leaks out in many small, forgettable payments: a UPI transfer here, a delivery order there.

A 30-day window is long enough to include a salary day, bill dates, weekends and at least one unplanned expense. It is short enough that you can keep going without burning out.

The goal is awareness, not perfection. You are not trying to spend less this month. You are collecting honest data. Often the act of recording alone changes behaviour a little, but treat that as a bonus, not the aim.

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Before you start: 15-minute setup

1. Write down your take-home pay. Use the amount that actually reaches your bank account after tax and PF, not your CTC. If you have other regular income (rent, freelance, interest), note it separately.

2. List the places money leaves from. Bank accounts, credit cards, UPI apps, wallets and cash. If you miss one, your totals won't add up.

3. Pick 8 to 12 categories. Too many categories make logging a chore. A good starter list:

4. Pick your tracking method. A notes app, a spreadsheet or a finance app all work. The best method is the one you will still use on day 20. If you use WIMM, the steps are in the box below.

5. Decide your logging moment. Either log right after each payment, or set a fixed daily time (for example, 9 pm) to enter the day's spending. Daily batching is fine as long as you do it every day.

Do this in WIMM (about 5 minutes)

1. Add your bank accounts, cash wallet and credit cards as accounts so every payment has a home.
2. Enter your salary as income on the date it arrives.
3. Check the category list and rename or remove anything you won't use.
4. Turn on a daily reminder at your chosen time so logging becomes a habit.

WIMM is free for tracking expenses and reading your dashboard. Your data is stored in an encrypted database on your device.

Download WIMM on Google Play

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The four-week plan

Week 1: Capture everything

Log every payment, including tiny ones. Don't judge, and don't change how you spend. If you forget something, reconstruct it from your bank or UPI history the same evening.

Your only job: build the habit. Aim for 6 or 7 days of complete entries.

Week 2: Catch the leaks

Keep logging. At the end of the week, check your totals once. Look for:

• Payments you don't remember making
• Categories larger than you expected
• Repeating small charges Don't make decisions yet. Just notice.

Week 3: Separate needs from wants

Add one tag or note to each expense: need, want, or not sure. Be honest. Groceries are a need, but ordering from a restaurant three times a week is probably a want.

A quick test: if my income dropped by a third tomorrow, would I still pay for this? If yes, it leans toward a need.

Week 4: Close the month and review

On day 30, add up each category and compare it to your take-home pay. Use the review template at the end of the next section.

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Worked example: ₹45,000 take-home salary

The numbers below are illustrative, not averages or benchmarks. They show how the exercise works. Your own result will differ.

Meera earns ₹45,000 a month after deductions. She rents a flat, has one small loan, and thinks she "spends about ₹30,000 and saves the rest." Here is what her 30 days showed:

What Meera learned:

1. She spent about ₹42,700, not ₹30,000. The gap was about ₹12,700. That's the whole point of the experiment.
2. Eating out and shopping together cost ₹9,000, about as much as most of her rent. She hadn't counted them as "real" spending.
3. Forty-one small payments added up to ₹2,903. Each one felt like nothing. Together they were larger than her subscriptions and health spending combined.
4. Her subscriptions (₹1,297) included three services she hadn't opened in over a month. Her fixed costs (rent, EMI, bills, subscriptions) came to ₹18,897, or about 42% of her salary. The flexible categories, where she had real choice, made up most of the rest.

Nothing here is "wrong." Meera isn't overspending on a sinful scale. She simply had no visibility. Once she could see the numbers, she could make deliberate choices.

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How to read your results

Use this review template on day 30. It takes about 20 minutes.

Step 1: Total check. Add all categories. Does total spending plus leftover equal your income? If a gap remains, you have untracked spending. Check cash withdrawals, credit card payments and UPI.

Step 2: Rank your categories. List them from largest to smallest. Circle the top three.

Step 3: Split fixed and flexible.

• Fixed: rent, EMI, insurance, subscriptions you plan to keep
• Flexible: eating out, shopping, entertainment, travel, small spends Flexible spending is where your decisions have the most room.

Step 4: Ask four questions.

1. Which expense surprised me most?
2. Which spending would I do again without hesitation?
3. Which spending left me feeling nothing, or regret?
4. What did I forget to log, and why? Step 5: Compute your savings rate.

Savings rate = (income − total spending) ÷ income × 100

Meera's was (45,000 − 42,700) ÷ 45,000 = 5.1%. There's no universal "right" number. What matters is that you now know yours and can watch it move.

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What to do after day 30

Pick one to three changes. More than that rarely sticks.

1. Cancel or pause what you don't use. Check subscriptions first because they are the easiest win.
2. Set a soft limit on your biggest flexible category. Choose a number slightly below this month's actual, not a heroic cut. Meera might try ₹3,500 for eating out.
3. Keep tracking. The second month tells you whether the first month was typical.
4. Move to a simple budget once you've tracked two or three months. A budget built from real data is far more realistic than one built from guesses.
5. Set a bill reminder for anything you paid late or nearly missed.

Do this in WIMM

• Open the Dashboard to see your spending by category for the month.
• Open Reports for the 30-day view and export it if you want to keep a copy.
• Create a budget for your top flexible category using this month's number as a starting point.
• Add reminders for rent, EMI and subscription renewal dates.

Download WIMM on Google Play

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Common mistakes

• Skipping cash. Cash spending is easy to forget. Log withdrawals as a category, then break them down as you spend.
• Starting on a "weird" month. Any month has surprises. Start anyway. Don't wait for a perfect month.
• Judging yourself. Guilt makes people quit tracking. Treat it as data collection.
• Too many categories. If you hesitate over where something goes, use the nearest one and move on.
• Stopping at week 2. The patterns appear in weeks 3 and 4.
• Forgetting credit card payments. Count purchases when you make them, not when you pay the bill, or you will double-count.

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FAQ

Do I need a budget before I start? No. Track first, then budget. A budget built on guesses tends to fail within weeks.

What if I miss a few days? Reconstruct from your bank or UPI history and carry on. Don't restart.

Should I include savings and investments as spending? Record them separately as transfers or savings so you can see them, but keep them out of "spent" when you calculate your leftover.

What if my income varies? Use your actual receipts for the 30 days, and repeat the experiment for another month to see the range.

Is 30 days enough? It's enough to reveal the big patterns. Annual expenses such as insurance and festivals won't show up, so note them separately.

Does tracking mean I have to cut back? No. The aim is to make sure your spending reflects your choices.

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Key takeaways

• Track every rupee for 30 days before you try to budget.
• Use 8 to 12 categories and log daily.
• Compare your real total with what you thought you spent.
• Look at fixed versus flexible spending, and at your small payments.
• Choose one to three changes, then keep tracking.

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This article is for general education and is not financial, tax or investment advice. The example is illustrative and not a benchmark. Please consider your own circumstances or consult a qualified professional for personalised guidance.

About the author: Debapriyo Paul is the founder of PaulKreations and a Flutter developer. He built WIMM (Where Is My Money?), a personal finance app for Indian users. He is a software developer, not a licensed financial adviser, so this guide is educational and not personalised advice.

Last verified: 21 October 2026. Found an error? support@paulkreations.com. We correct mistakes openly.

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