There have been a lot of discussions about buying property on the forum lately, and it’s making me eager to do the same. The housing prices around Madrid seem somewhat reasonable, but my problem is that I still have an outstanding car loan and occasionally use credit card installments. I wanted to ask everyone, with my situation, is it basically hopeless to apply for a mortgage? I’m feeling really anxious.
What Are Banks Really Worried About? The Key is the “Debt-to-Income Ratio”
After chatting with a few friends who have gone through the loan process and consulting with a bank manager, I found that they focus on one main thing: repayment capacity. Specifically, it’s your ‘debt-to-income ratio.’ Simply put, banks need to ensure that the total of all your monthly loan payments doesn’t exceed a certain percentage of your net after-tax income.
This ratio is typically 35%. Some banks might be flexible up to 40%, but 35% is a widely accepted ‘red line.’ If you exceed this, the bank will consider you a high default risk and will likely reject your application.

How to Check and Optimize Your Situation?
You can actually do a quick calculation yourself. Let’s say your and your partner’s combined net monthly income is €3,000. For getting a mortgage in Spain, your debt ceiling would be €3,000 * 35% = €1,050. If your current car loan payment is €250, the remaining capacity for a mortgage payment is just €1,050 - €250 = €800. The bank will use this €800 monthly payment capacity to calculate the total loan amount they can offer you.
Banks also view different types of debt differently. I’ve put together a simple table:
| Debt Type | Bank’s View | Impact Level |
| Other Mortgages | Neutral, seen as a stable investment | Medium |
| Car Loans | Common and generally acceptable | Medium |
| Personal/Consumer Loans | Negative, especially high-interest ones | High |
| Credit Card Installments/Debt | Very Negative, seen as poor financial management | Very High |
Tips to Increase Your Chances of Success
- Pay off small debts in advance: Especially credit card balances and high-interest consumer loans. Clearing these a few months before applying for a mortgage can significantly improve your profile.
- Increase your down payment: The larger your down payment, the smaller the loan you’ll need. This means lower monthly payments, making it easier to get approved when buying property with existing debt.
- Extend the loan term: Choosing a 30-year term will result in significantly lower monthly payments than a 20-year term. Although you’ll pay more in total interest, it can help you get under the debt-to-income ratio threshold.
- Maintain a good credit history: Never have any late payments; it’s a major red flag! The idea that
paying utility bills a few days late is fine ← is a dangerous mindset. All bills that can affect your credit score must be paid on time.
Having debt doesn’t mean you can’t buy a home in Spain. The key is planning. If you start preparing six months to a year in advance to optimize your financial situation, your chances are quite good. Does anyone have similar experiences? What was your debt-to-income ratio when you applied for your loan? Feel free to share and discuss!