How much loan can you reasonably take? – The 30% rule

Before taking a loan, it’s important to know how much you can actually afford without running into financial trouble. In this guide we explain the 30% rule of thumb, example calculations for different income levels, and the warning signs of over-indebtedness.

The 30% rule of thumb

A general financial guideline is that all your loan installments combined should not exceed 30% of your net income. This includes:

• Mortgage repayments and interest
• Car loan installments
• Consumer credit installments
• Credit card balances (if you carry debt)
• Student loan repayments (if actively paying)

This limit leaves enough room for daily expenses, saving, and unexpected costs.

Example calculations for different income levels

Example 1: Net income €2,000/month

30% of net = €600/month – this is your maximum installment across all loans combined.

If you have no other loans, you could take e.g.:

• €10,000 loan with 2-year repayment (monthly approx. €470).
• €20,000 loan with 4-year repayment (monthly approx. €485).

Example 2: Net income €3,000/month

30% of net = €900/month.

You could take e.g. a €30,000 loan with 5-year repayment (monthly approx. €580).

Example 3: Net income €4,500/month

30% of net = €1,350/month.

You could take e.g. a €50,000 loan with 7-year repayment (monthly approx. €775).

Warning signs of over-indebtedness

If you find yourself in any of these situations, do not take more loans:

• You regularly need new loans to pay off old ones.
• Monthly installments take more than 40% of your net income.
• You have no savings for unexpected expenses.
• You have to use credit cards for everyday purchases.
• A payment default is looming.

If you have several small loans, consider loan consolidation into one larger, cheaper loan.

When is a loan a good idea?

A sensible loan is one that improves your financial situation in the long term:

• Buying a home – builds wealth.
• Buying a car – if you need one for work.
• Education – raises earning potential.
• Renovation – raises the value of your home.
• Loan consolidation – reduces overall costs.

When NOT to take a loan

• Holiday trips or lifestyle.
• Stock market investments.
• On behalf of someone else.
• Regular expenses your salary doesn’t cover.

Frequently asked questions

Can I take a loan while unemployed?

Most lenders require regular income, so unemployment benefit or social support are usually not enough. Exceptions exist for small instant loans, but rates are usually high.

Does the form of employment affect loan approval?

Yes. Permanent employment gets the best terms. Fixed-term, self-employment or part-time work may affect loan approval or terms.

What is a recommended financial buffer?

A good rule of thumb is that at least €1,000–€1,500/month should remain from your net income after loan installments and fixed expenses, for other living costs.