The Debt vs. Investing Dilemma

Beginners often grapple with a fundamental financial question that can significantly impact their long-term wealth: Should I focus on paying down my existing debts first, or begin investing my money for future growth?

This crucial decision point presents a complex dilemma that requires careful consideration—in fact, either approach can be strategically sound depending on your unique financial circumstances and goals. While debt reduction and investment strategies are important pillars of financial management, determining the optimal sequence of these actions is crucial for building a robust and sustainable financial foundation.

This comprehensive guide approaches this universal challenge through a European perspective—thoroughly examining the nuances of various debt categories, prevailing interest rate environments, and regional financial customs—while simultaneously providing internationally applicable strategic insights.

We'll conduct an in-depth exploration of various financial scenarios where prioritising debt elimination emerges as the most prudent course of action, as well as circumstances where initiating an investment strategy might yield superior long-term results. By the conclusion of this analysis, you'll be equipped with a practical and straightforward decision-making framework that will enable you to confidently determine the most appropriate financial priority for your circumstances.

Europe’s Debt Landscape: Types, Rates, and Norms

Common Debts in Europe:

European households typically carry several types of debt:

  • Mortgages,

  • Credit Card Balances,

  • Personal Loans (for cars or other purchases),

  • overdrafts,

  • and in some countries, student loans.

Mortgages represent the largest debt, while credit cards and consumer loans typically have higher interest rates but lower balances.

The use of credit cards varies by country; they're more common in the UK than in Germany, for instance, but understanding the cost of each type of debt is essential regardless of location.

Interest Rates in Context:

While Europe experienced very low interest rates throughout the 2010s, rates have risen sharply since 2022 due to inflation.

Today's borrowing costs vary significantly across the continent. The average mortgage interest rate in 2023 ranged from 3–5% in most Western European markets to over 7–8% in countries like Poland and Hungary.

Credit card debt carries particularly high costs—in the UK, the average credit card interest rate was ~26.7% in April 2025, up from 21.9% in 2019.

High-interest "bad" debts (like credit cards or payday loans) can rapidly erode your finances, while low-interest "good" debts (such as fixed-rate mortgages or government-subsidised student loans) may be more manageable and comparable to potential investment returns.

Household Debt Norms:

Debt levels vary significantly across European regions.

As of late 2024, euro area households carried debt averaging 82.7% of their annual disposable income. Some countries show even higher ratios—Denmark and the Netherlands have household debts roughly double their national incomes, primarily due to large mortgages.

These cultural norms shape individual decisions: in countries where mortgages are common and interest rates are low, you might feel comfortable investing while maintaining mortgage debt. However, in places where consumer debt is discouraged, you might prioritise paying off even moderate loans.

Regardless of local norms, the fundamental principles of balancing debt versus investment remain consistent.

When Paying Off Debt Takes Priority

For beginners, a general rule is to tackle high-interest debts before investing.

The reason is simple: expensive debt erodes your finances faster than investments can build them. Here are scenarios where prioritising debt repayment makes the most sense:

  • High-Interest Debt = Guaranteed "Return": Pay off any debt with a high interest rate (e.g. credit cards, payday loans, high-rate personal loans) first. The math is straightforward: paying down such debt gives you a risk-free return equal to the interest rate. If your credit card charges 20%, every euro used to reduce that balance effectively "earns" you a 20% annual return in saved interest. Few investments can reliably match a 20% return, making debt elimination the smarter choice. Generally, debts above a certain interest threshold (often around 5–6%) cost more than you'd likely gain by investing, especially after considering risk.

    • As the UK's MoneyHelper service plainly states: "You will rarely be able to earn more on your savings than you will pay in interest on your debts, so as a rule of thumb, plan to pay off your debts before you start to save (or invest)".

  • Rising Rates and Variable Loans: In a rising interest rate environment, debt becomes more burdensome. Many European loans (like variable-rate mortgages or credit lines) have faced interest rate increases recently. Higher rates mean more of each payment goes to interest rather than principal, slowing debt reduction. With variable-rate debt, making extra payments now can protect you from future rate increases and higher payments. Aggressive debt repayment during these periods prevents "rate shock" and saves considerable interest over time.

  • Financial Stress and Peace of Mind: Debt isn't just a financial burden—it's an emotional one. If debt keeps you up at night with worry, that's a clear sign to focus on repayment. Many people experience profound relief once their high debts are gone. Debt elimination reduces stress and improves mental well-being. There's no shame in prioritising peace of mind—if being debt-free helps you sleep better, even at the cost of some investment growth, that's valuable.

  • Protecting Your Credit and Future Goals: For young Europeans, maintaining a good credit score is crucial for future goals like getting a mortgage. High debt balances and missed payments damage your credit. Paying down debt lowers your credit utilisation and proves reliability, which can boost your credit score. This positions you for better borrowing terms later, such as qualifying for lower-interest home loans. Don't let investments lead you to fall behind on debt—a missed payment fee or credit score drop isn't worth it. Always make at least the minimum payments before investing.

  • No Investment Beats Unmanageable Debt: If you struggle to keep up with your debts, focus on controlling them first. When debt repayments consume a very large share of your income, it's not time to invest.

    • Follow this guideline: keep essential debt payments to no more than ~28% of income for home mortgage payments, and stay under ~40% for all debts combined. If you exceed these limits, aggressive debt repayment will improve your financial stability more than small investments would.

  • Emergency Cushion Comes First: Most experts recommend building an emergency fund before serious investing—and often before extra debt payments, unless the debt carries very high interest.

    • Keep 3–6 months of living expenses in cash as a safety net to prevent sliding back into debt if emergencies arise. Without savings, build this alongside handling urgent debts. For very high-interest debt, consider saving a starter emergency fund of €1,000 first, then tackle the debt, and finally build your full emergency reserve. Choose an approach that protects you from unexpected expenses.

Pay off debt first when the debt's interest exceeds reasonable investment returns or when the debt strains your finances or peace of mind. Every euro of expensive debt you eliminate is a guaranteed gain for your net worth.

You'll free up cash flow and create a stronger foundation for future investing.

As one financial advisor puts it, paying off a 15% credit card is like getting a 15% risk-free return—an unbeatable deal!

When Investing Makes Sense (Even If You Have Some Debt)

There are situations where you might start investing even while carrying debt, or at least invest in parallel with debt repayment.

The key factor is the cost of your debt versus the potential gain from investing, along with your financial goals and comfort level.

Here are scenarios favouring investment:

  • Low-Interest Debt and Opportunity Cost: With relatively low-interest debt, investing spare money might earn more than aggressive debt repayment. Take a mortgage at 2–3% interest or a government-subsidised student loan. Since a diversified stock market investment historically returns around 7% annually over the long run, your money could work harder through investing than debt repayment. The key is that the expected return exceeds the debt cost. While investment returns are not guaranteed and fluctuate yearly, stocks and other assets typically outperform low interest rates over time. The lower your debt rate, the more investing makes sense, as the difference between what you pay and what you could earn becomes more attractive.

  • Don't Lose Time in the Market: Time is irreplaceable in investing. Starting early lets you harness compound interest (earning returns on returns). Even a few years' delay can dramatically affect your ultimate wealth.

    • Consider this: €10,000 invested at 5% grows to ~€26.5K in 20 years, but reaches ~€43K in 30 years. Those extra 10 years nearly double the total—that's compounding at work. If your debts are manageable, it can pay to start investing as early as possible, even with small amounts. The opportunity cost of directing everything to debt means missing potential growth. With decades ahead, investing sooner gives your money more time to grow.

  • Long Time Horizon & Goals: Investing works best over the medium to long term. A long time horizon—common when you're young and saving for retirement or distant goals—lets you weather market fluctuations. Investing while gradually paying a low-rate debt makes sense if you won't need the invested money for at least 5–10 years.

    • For instance, if you're in your 20s or 30s with a reasonable mortgage and no other major debt, waiting decades to invest would mean missing crucial compounding years. Instead, start investing regularly (like contributing to a pension or index fund) while maintaining mortgage payments. You'll build both home equity and an investment portfolio. Even for older investors, if debt repayment spans many years, investing extra cash might beat accelerating a very low-interest loan. Postponing all investing until debt-free can severely limit your market gains, especially if long-term growth is your goal.

  • Mortgage as an "Exception": Financial planners typically treat mortgages differently from other debts. Home loans usually combine long terms, relatively low interest, and an appreciating asset. This means you don't necessarily need to clear your mortgage before investing. Focusing solely on mortgage repayment while ignoring investing could backfire, leaving you "house rich, cash poor" with no investment portfolio. Many opt to invest and pay their mortgage simultaneously.

    • While you might make extra mortgage payments when rates rise or you have surplus cash, don't sacrifice investing during your prime earning years. This decision often comes down to personal preference: some prefer a debt-free home, while others prioritise investment growth. Remember, if your fixed mortgage rate is low and investments are likely to earn more, the numbers favour investing, but choose what gives you peace of mind.

  • Free Money and Matches: One clear case for investing despite debt is when you can access "free money." The classic example is an employer pension match (common in many corporate retirement plans). When employers match contributions—whether 50% or 100% up to a limit—that's an instant 50–100% return. No debt repayment can match that! It's usually wise to contribute enough to get the full employer match even while managing other debts. Similarly, take advantage of government incentives, tax credits, or grants for retirement accounts when available. Consider this "free money" part of your compensation. Unless you're facing insolvency, secure these matched contributions before focusing on debt.

  • 0% and Low Promotional Rates: Some debts offer low introductory rates (like a 0% APR credit card for 12 months or a low-interest financing deal). If—and only if—you're disciplined and certain about repaying before the promotional period ends, you might invest meanwhile rather than rushing to clear the 0% debt. But proceed carefully: missing the deadline could trigger backdated interest. It's prudent to set aside the debt payment money first. While the timing and terms of the debt might allow some short-term investing, always read the fine print. Most importantly, ensure you'll clear the balance before interest kicks in—don't let a temporary 0% rate lead to complacency.

  • Maintaining Minimums and Avoiding New Debt: Investing while holding debt only works if you keep debt obligations under control. This means meeting all minimum payments on time (preferably paying more). Never invest so much that you miss payments or need credit for daily expenses. If you're using credit cards or overdrafts because of excessive investing, that's a warning sign—scale back and stabilise your budget first. Invest only genuine surplus money that you won't need soon. Keep your debt repayment on track; otherwise, interest and fees will erase investment gains. Discipline is essential with this balanced approach: maintain debt payments and invest only truly extra funds.

To sum up, investing alongside manageable debt makes sense when your debt carries low interest, you have a long time horizon, and you're comfortable with some risk.

Your decision should reflect your personality: can you sleep well with debt while your investments grow, or do you prefer the security of being debt-free? While there's no universal answer, analysing the numbers and understanding your goals will guide you to the right choice.

“Interest on debts grows without rain.”

Yiddish Proverb

Making the Choice: A Simple Decision Framework

Here's a clear, step-by-step framework to help you decide between paying off debt or investing:

A simple guideline from Fidelity Investments suggests 6% as a key threshold: if your debt's interest rate is below ~6%, consider investing, but if it's 6% or above, prioritise paying it off. While this isn't a hard rule, it's a helpful starting point. Let's examine each step:

  1. Secure Your Basic Safety Net: First, ensure you can cover essentials and build a starter emergency fund. Keep a few months' expenses in an accessible savings account. If you have high-interest debt, start with a smaller safety net—perhaps one month of expenses or €1,000—to handle unexpected costs.

  2. List All Debts and Interest Rates: Document every debt (credit cards, loans, mortgage, etc.), including the balance, interest rate (APR), and key terms. Categorise them as either high-interest (like credit cards and payday loans) or low-interest (such as mortgages and student loans). Always make minimum payments on all debts. If this is challenging, seek financial advice before considering investments.

  3. Attack High-Interest Debt First: For debts with very high rates (above ~6-7%), focus on paying these off before significant investing. These costly debts typically outweigh potential investment returns. Channel extra money to these debts using the "debt avalanche" method: target the highest-interest debt first while maintaining minimum payments on others. Once that's paid, move to the next highest. While some prefer the "debt snowball" approach—paying the smallest balances first for psychological wins—the avalanche method saves more money overall.

  4. Evaluate Moderate/Low-Interest Debt: After eliminating high-interest debt, assess your remaining lower-rate obligations. Compare these interest rates against potential investment returns from index funds or retirement accounts. Consider whether rates are fixed or variable. With interest ≤ 4-5% (like a 3% mortgage), investing extra money often makes more sense than early repayment. For borderline cases (6%–7%), weigh potential investment returns against your risk tolerance. Check for early repayment penalties—these might favour investing instead. Generally, maintain low-rate debt payments while investing excess funds, but consider splitting your approach for mid-rate debt.

  5. Consider Your Factors: Weigh qualitative factors like income stability (unstable income might favour debt repayment), investment timeline (longer horizons favour investing), and your comfort with debt. There's no single right answer—your personal comfort matters. Just avoid decisions based on misinformation, like fearing investments simply because they're unfamiliar or keeping low-rate debt unnecessarily.

  6. Maximise "Free" Returns: Incorporate any employer match or tax-advantaged investment opportunities into your strategy. Consider contributing enough to get your full pension match while directing remaining funds to debt. Take advantage of tax credits for specific investment accounts. This ensures you capture guaranteed returns before addressing other priorities.

  7. Decide on Parallel Investing vs. Full Debt Payoff: With high-interest debt eliminated, choose whether to invest while maintaining regular debt payments or focus entirely on becoming debt-free. If your debts are manageable and low-cost, consider regular investing—perhaps monthly contributions to a diversified portfolio—while carrying the remaining debt. Try a balanced approach: maybe 70% to investments and 30% to extra debt payments, adjusting based on your situation. If debt causes anxiety, becoming debt-free first is perfectly acceptable—just recognise you'll have less time for investment growth.

  8. Revisit and Adjust Over Time: Your strategy shouldn't be static. Review your plan regularly as interest rates and circumstances change. Your priorities might shift with age or changing goals—perhaps preferring a debt-free retirement despite low mortgage rates, or adjusting investment levels during market changes. Stay flexible but avoid impulsive decisions. Whether focusing on debt, investing, or both, consistency matters most.

Following these steps helps create your personalised strategy.

The core principle is simple: eliminate "bad" (high-interest) debt first, always make required payments, then balance investing with extra payments on "good" (low-interest) debt.

The best approach varies by person and debt type. Choose a path that strengthens your finances while matching your comfort level.

A Simple Decision Framework Summary
  1. Do you have an emergency fund?
    No → Save at least €1,000 first.
    Yes → Go to step 2.

  2. Do you have high-interest debt (above 6%)?
    Yes → Prioritise paying that off.
    No → Go to step 3.

  3. Do you have access to free money (employer match, tax break)?
    Yes → Invest at least enough to get it.
    No or Already Done → Step 4.

  4. Are your remaining debts low-interest (under 5%) and under control?
    Yes → Start investing while paying off debt on schedule.
    No → Focus more on debt for now.

💡 You can also split your strategy: for example, invest 60% of your extra money and use 40% to pay debt faster.

When “Debt” and “Investing” throw punches, and you’re stuck in the middle trying to make the smart move. 🥊💸🤔

Finding Your Balance

Ultimately, deciding whether to prioritise debt or investing comes down to understanding the trade-offs and knowing yourself.

In Europe, as anywhere, you must weigh your current interest rates against potential investment returns, consider your risk tolerance and time horizon, and factor in local financial safety nets.

The solution is often not purely one or the other—you might choose a phased approach (debt first, then invest) or a parallel strategy (doing both). For instance, you could clear high-interest credit card debt and build an emergency fund in year one, begin modest investing in year two while finishing your remaining loans, then scale up your investments once debt-free. This measured progression covers all bases.

Here are the essential takeaways:

  1. High-interest debt is a four-alarm fire—extinguish it first.

  2. Investing is for the long haul—only commit money you won't need for years.

  3. Diversify your efforts—you can handle debt repayment and investing simultaneously when circumstances allow.

  4. Above all, live below your means—avoiding new debt makes this entire process significantly easier.

The best plan is the one you can stick to, so find your balance and methodically build your financial foundation. Good luck on your journey to financial wellness!

📥 Click here to download the “Debt vs. Investing Decision Tool” (Excel)

Not sure whether to invest or pay off debt? Download our free decision tool to get instant clarity.

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