How to Create a Monthly Budget in 5 Simple Steps

Why You Need a Monthly Budget

A budget isn't about restricting yourself — it's about giving yourself permission to spend on what matters. Without a budget, money flows out randomly. With one, you decide where it goes.

People who budget consistently report:

• 30% less financial stress


• Higher savings rates


• Fewer "where did my money go?" moments


• Better sleep (seriously — financial anxiety is a top cause of insomnia)

Step 1: Calculate Your Monthly Income

Start with what comes in. Use your after-tax take-home pay, not your gross salary.

If you have a regular salary: This is straightforward — it's the amount deposited into your bank account each month. If your income varies (freelance, commission, tips): Use the average of your last 3 months. For months where you earn more than average, put the excess directly into savings.

Step 2: List Your Fixed Expenses

Fixed expenses stay roughly the same each month:

• Rent or mortgage
• Utilities (electricity, water, gas, internet)
• Insurance (health, car, home)
• Loan payments (student, car, personal)
• Subscriptions (phone plan, streaming, gym)
• Transportation (transit pass, car payment)

Add these up. This is your baseline — the minimum you need to function each month.

Step 3: Estimate Your Variable Expenses

These change month to month:

• Groceries
• Dining out and takeout
• Fuel or ride-sharing
• Entertainment
• Clothing
• Personal care
• Gifts
• Household supplies

If you're not sure how much you spend in each category, check your bank statements for the last 2-3 months. The numbers are often surprising.

Step 4: Set Your Savings Target

Before allocating what's left to "fun money," decide how much you want to save. A good starting point is 20% of your income, but even 10% or 5% is better than nothing.

Common savings allocations:

• Emergency fund — until you have 3-6 months of expenses saved


• Retirement — aim for 15% of income long-term


• Goals — vacation, new car, house down payment

Step 5: Do the Math

Income − Fixed expenses − Variable expenses − Savings = Remaining

If the remaining number is:

• Positive: You have a buffer. You can allocate it to fun spending, extra savings, or debt payoff.


• Zero: Perfect — you've accounted for every euro. This is zero-based budgeting.


• Negative: You're spending more than you earn. Cut variable expenses or find ways to increase income.

Example Monthly Budget

Common Budgeting Mistakes

Starting too tight. If you budget €0 for entertainment, you'll break the budget by week two and give up. Be realistic. Forgetting irregular expenses. Car registration, annual insurance, holiday gifts — these happen every year. Divide the annual cost by 12 and include it monthly. Not reviewing. A budget you never check is just a wish list. Review weekly — it takes 5 minutes. Giving up after one bad month. Every budget fails sometimes. The goal is to get back on track, not to be perfect.

Track It With an App

The easiest way to stick to your budget is to track spending in real-time. Portofelo lets you set up category budgets in under a minute and shows your progress with clear visual bars. Scan receipts or add expenses manually — the app does the math.