Create a Budget: In 30 Minutes You'll Know Where Your Money Goes
Follow this step-by-step guide to build a realistic budget in just 30 minutes and get your finances under control.
The story you probably know
It's the middle of the month. You check your bank account and wonder: "Where did all my money go?"
Your salary came in – you remember that much. But somehow, after rent, groceries, a few online purchases, and several coffees, half of it is gone – and you still have two weeks until payday.
That's not your fault. It's just genuinely hard to keep track when money flows in and out from all directions.
But here's the good news: a budget changes that. And no, a budget isn't some kind of financial punishment. It's simply an overview – like a map for your money.
In this article, I'll show you how to build a realistic budget in just 30 minutes. After that, you'll know exactly where your money is going – and you can decide consciously whether that's how you want it.
What exactly is a budget?
At its core, a budget is simple: it's an overview of what money comes in and where it goes.
A lot of people think budgets are restrictive – like someone telling you what you're allowed to spend. That's nonsense. A budget is just clarity. It answers the question: "How much money can I count on, and what do I need it for?"
And that's exactly why a budget is so powerful: - No more surprises. No more shock at the end of the month. - You save automatically. Once you know how much is left over, you can set it aside on purpose – instead of just spending it. - You reach your goals faster. Whether it's a holiday, a new laptop, or financial security – a budget tells you how realistic your goal actually is.
The 50/30/20 rule (with a Swiss example)
One of the simplest ways to structure a budget is the 50/30/20 rule. It works like this:
- 50% of your net income for essential expenses (rent, groceries, insurance)
- 30% for lifestyle & leisure (restaurants, hobbies, streaming services)
- 20% for saving & debt repayment (emergency fund, Pillar 3a, ETF savings plans)
Let me show you what that looks like with a concrete Swiss example.
Scenario: You earn CHF 6'500 gross per month (roughly Swiss average for someone starting out)
After taxes, AHV (old-age insurance), and health insurance, you're left with approximately CHF 4'800 net. Here's what your 50/30/20 budget would look like:
| Category | Percentage | CHF |
|---|---|---|
| Essentials (rent, food, insurance) | 50% | CHF 2'400 |
| Lifestyle & leisure | 30% | CHF 1'440 |
| Saving & wealth building | 20% | CHF 960 |
| Total | 100% | CHF 4'800 |
This might sound strict at first glance, but it's not meant as "you're only allowed CHF 1'440 for leisure" – it's more of a guideline. Your real situation might look different. If you live in Zurich in a two-room flat, your rent probably takes up 40% of your budget, not 25%. That's completely normal.
The rule is a starting point, not a religion.
Step-by-step: How to build your budget in 30 minutes
Now for the practical part. Grab a pen, your phone, or open a spreadsheet – and follow these 5 steps.
Step 1: Track your income (5 minutes)
Write down what money comes in every month. This usually includes:
Regular income: - Your salary (net) – the number that actually lands in your account at the end of the month - The 13th month's salary (if you get one) – convert it to CHF per month: e.g. CHF 12'000 ÷ 13 = CHF 923/month - Side income (if you have any)
Example (starting out in your career): - Net salary: CHF 4'800 - 13th month spread out: CHF 923 - Monthly total: CHF 5'723
Tip: Always use your net figure (after taxes, AHV, and health insurance), not gross. That's what makes your budget realistic.
Step 2: List your fixed expenses (5 minutes)
These are costs that stay the same every month (or roughly the same):
Housing & insurance: - Rent - Health insurance (Krankenkasse) - Personal liability insurance (Privathaftpflicht) - Home contents insurance (Hausrat), if applicable
Ongoing costs: - Mobile phone & internet - Electricity (monthly average) - Water - Public transport pass or fuel (car costs)
Subscriptions & regular payments: - Gym membership - Streaming services you pay for - Other insurance (dental, accident)
Example (in a shared flat in Bern): - Rent: CHF 900 - Health insurance: CHF 350 - Mobile & internet: CHF 60 - Electricity & water: CHF 50 - Public transport pass: CHF 60 - Gym: CHF 40 - Fixed total: CHF 1'460
That's less than 50% of your income, so you already have room to breathe. ✓
Step 3: Estimate your variable expenses (5 minutes)
These are things that change from month to month:
Food & eating: - Groceries at Coop/Migros - Takeaway/restaurants - Coffee with friends
Transport & getting around: - Petrol (if you drive and don't use public transport) - Parking - Occasional rides
Leisure & hobbies: - Cinema, concerts, going out - Sports equipment - Travel & holidays - Hobby supplies
Other: - Gifts - Haircuts / barber - Shopping & clothes
Example: - Groceries: CHF 300 - Restaurants/takeaway: CHF 150 - Leisure & hobbies: CHF 200 - Shopping & clothes: CHF 100 - Gifts & miscellaneous: CHF 80 - Variable total: CHF 830
Not sure how much you actually spend? Look through your last 3 bank statements and calculate the average. That's more honest than guessing.
Step 4: Plan your saving & wealth building (3 minutes)
This is the most important part – because it's for your future.
Emergency fund: Save 3–6 months' worth of expenses in a savings account. With CHF 5'700/month in expenses, that means roughly CHF 17'100–CHF 34'200. Sounds like a lot? Start with CHF 500/month and build from there.
Pillar 3a (Switzerland's private pension savings): If you're employed, you should be contributing here. In 2025 you can pay in up to CHF 7'140 per year (for employees). That's roughly CHF 595/month. The money is locked until retirement, but you get tax deductions.
ETF savings plan (long-term wealth building): Invest small monthly amounts in broadly diversified ETFs. The classic: an ETF like MSCI World (e.g. iShares Core MSCI World UCITS ETF). Even CHF 100–200/month can grow into a serious sum over 20–30 years.
Example (starting conservatively): - Emergency fund savings: CHF 300 - Pillar 3a: CHF 200 - ETF savings plan: CHF 150 - Saving total: CHF 650
Step 5: Check your budget – does it add up?
Now add everything together:
| Category | CHF |
|---|---|
| Fixed costs | CHF 1'460 |
| Variable expenses | CHF 830 |
| Saving & wealth building | CHF 650 |
| Total | CHF 2'940 |
Your income was CHF 5'723, and you need CHF 2'940. That means: CHF 2'783 is left over.
That's a strong position! Now you have options: - Save more? - Budget more for leisure? - Both?
You decide – but now you know what you're working with. That's the power of a budget.
Tools & resources
You don't need expensive apps or financial software. Here are simple options:
Spreadsheet: A simple table with columns for income, fixed costs, variable costs, and savings is usually enough. Most tools I find online are too complicated for getting started.
Free apps: - YNAB (You Need A Budget) – 34-day free trial, then paid - Google Sheets – free, simple, works everywhere - MoneyMoney (good Swiss bank integration, but not free)
Your bank statement: Honestly: if you open your bank PDF every month and look at where the money went, that's already a budget. It doesn't have to be complicated.
Common mistakes to avoid
Mistake 1: "I'll just estimate"
Especially for variable expenses, guessing isn't good enough. Look through your last 3 bank statements. Reality matters more than a tidy-looking number.
Mistake 2: "Saving is optional"
Most people budget like this: income – expenses = "whatever's left", then maybe save. The opposite works better: income – saving target = what you have to live on. That makes saving a habit, not an afterthought.
Mistake 3: "I'm budgeting too strictly"
A budget you can't stick to is useless. If you budget CHF 100/month for leisure but actually spend CHF 250, the budget just becomes a source of frustration. Better to be realistic and sustainable.
Mistake 4: "I'll create a budget and never look at it again"
A budget isn't a one-time exercise. Review it every month for 10 minutes. Life changes – your budget should keep up.
Mistake 5: "Everything has to be perfect"
Your first budget will never be perfect. After 2–3 months you'll see where you can be more realistic. That's completely normal – and actually the point.
Frequently asked questions (FAQ)
Q: My income varies. How does budgeting work then?
A: Budget based on your worst month from the last 6. When some months bring in more, that's a bonus you can save on top. You'll always be on the safe side.
Q: I'm living paycheck to paycheck – budgeting doesn't seem possible.
A: Your first priority then is an emergency fund of at least CHF 5'000–CHF 10'000. It might take a year, but once you have it, everything gets easier. Until then: just track where your money goes – without a strict budget.
Q: What's the difference between saving and investing?
A: Saving = money in an account that barely grows but is safe. Investing = putting money into the capital markets (ETFs, shares) where it grows over time but also fluctuates. For your emergency fund: save. For long-term wealth building: invest.
Q: My budget feels way too tight – why?
A: Your budget is probably based on your ideal spending, not your real spending. Look honestly next month at what you actually spend – and budget reality, not the fantasy version.
The key takeaways
A budget isn't financial punishment – it's clarity. In 30 minutes you'll know:
✅ How much money comes in each month ✅ Where your money is going ✅ How much you can save ✅ Whether your spending is realistic
And the best feeling? In two weeks, when the usual panic would normally kick in – it won't. You'll know you still have money, because you planned for it.
It doesn't have to be perfect. It just has to be real. And that's enough.