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Should I invest if I still have expensive debt?

How to think about investing when you have high-cost borrowing, with practical decision factors.

Published 16 August 2026 3 min read

The short answer

In most cases, paying down high-interest debt is sensible before making new investments, but the right choice depends on interest rates, your emergency savings, the nature of the debt and your personal objectives. Seek qualified financial and, if relevant, religious advice.

Why expensive debt matters

High interest rates on borrowing (credit cards, payday loans, some unsecured loans) often exceed expected long-term investment returns, which makes paying down such debt a priority to reduce guaranteed outflows.

Carrying expensive debt increases financial fragility. Investments can lose value, but debt obligations remain. Creating a small emergency fund first often prevents needing to borrow again if unexpected costs arise.

Religious and practical considerations

From a Shariah perspective, riba (interest) is typically undesirable. If riba is present in your own borrowing, many Muslims choose to reduce or eliminate it before investing, but personal circumstances differ and a qualified scholar or financial adviser can help.

Deciding whether to pay down debt or invest depends on the interest rate, expected after-tax investment return, penalties for early repayment, and liquidity needs. Where religious treatment is important, seek both financial and religious counsel.

What this means in practice

  1. 1List all debts, their interest rates and minimum monthly payments.
  2. 2Build a small emergency fund (for example enough for 1–3 months of essential expenses).
  3. 3Prioritise repaying debts with the highest interest or worst terms.
  4. 4Compare realistic after-tax expected returns from investing against your debt rates — do not rely on optimistic return assumptions.
  5. 5If you need religious guidance on riba or debt structure, consult a qualified scholar alongside a financial adviser.

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