Budgeting · Category index

Budgeting — calculators & guides

Tools for splitting a paycheck without feeling deprived. Apply the 50/30/20 rule, spot lifestyle inflation before it eats your raises, and find room for savings even on a tight income.

If the terms are new

Start with the decision you need to make today. The calculators explain the result in everyday language, and the glossary below defines the terms that usually slow readers down.

How to use this budgeting hub

Start with the calculator that matches the decision in front of you. Use the 50/30/20 calculator when you need a quick split, the lifestyle-inflation check when your income rose but savings did not, and the couple tools when shared costs are part of the picture.

Budgeting is not about making every month identical. It is about seeing the trade-offs early enough to choose them on purpose.

The tools

Calculators

01 Budget Rule Comparator Enter your net monthly income and compare four popular budget rules side by side. See how much each … Free Tool 02 Budget Categories Generator Enter your monthly income and choose a preset to generate a category list with percentages, euro amounts and … Free Tool 03 50/30/20 budget calculator The 50/30/20 rule splits net income three ways: half for essentials, a third for lifestyle, a fifth for … Free Tool 04 Lifestyle inflation check When income grows but discretionary spending grows faster, you're treadmilling. This check compares your last 12 months of … Free Tool

What a good monthly budget should show

A useful budget separates fixed needs, flexible wants, debt payments and savings. The exact percentages can vary, but the budget should make one thing visible: whether today’s spending leaves enough room for tomorrow’s goals.

If a rule feels unrealistic, treat that as information. High rent, family support or variable income may require a different split.

Frequently asked questions

Which budgeting calculator should I start with?

Start with the 50/30/20 calculator if you only know your income and broad spending categories. Use the lifestyle-inflation check when you want to compare spending growth with income growth.

Is 50/30/20 the right rule for everyone?

No. It is a simple baseline. It works best for stable income and moderate housing costs; high-cost cities, debt payoff and single-income families often need a custom split.

Should savings come before or after spending?

For planning, put savings in the budget before discretionary spending. That makes the trade-off visible instead of hoping there is money left at the end of the month.

Glossary

Needs: Meaning
Needs are the bills you must cover to keep everyday life running: housing, basic food, utilities, insurance and essential transport. If this part is too high, the rest of the budget has very little room to breathe.

Example
Rent and groceries belong here. A third streaming service may give a passionate speech, but it is still a want.
Wants: Meaning
Wants are flexible expenses that make life nicer but can usually be changed, paused or reduced. They are not “bad”; they just should not quietly crowd out savings, rent or debt payments.

Example
Coffee out can stay in the budget; it just has to compete honestly with travel, hobbies and other nice-to-haves.
Savings rate: Meaning
Savings rate shows how much of your income is going to future-you instead of current spending. It is useful because it turns “I save when I can” into a number you can actually compare month to month.

Example
If 15 € out of every 100 € goes to future-you, your savings rate is 15%.
Lifestyle inflation: Meaning
Lifestyle inflation is what happens when higher income turns into higher spending so quickly that savings barely improve. It often feels harmless because each upgrade is small, but together they can eat the whole raise.

Example
If takeout quietly wins every Friday, the budget should show it before the card statement does.