Debt
The Debt Drag score: what it means and how to improve it
A single number that shows how much pressure your debts put on your monthly take-home. Here is how it is calculated and what the bands mean.
Most people think about debt in terms of the total amount they owe. That number matters, but it is not the one that describes the pressure you feel each month.
The number that matters for your cashflow is how much of your monthly take-home is committed to debt repayments before you can do anything else with it.
The Debt Drag score expresses exactly this: your minimum monthly debt payments as a percentage of your monthly take-home pay.
How it is calculated
Take the combined minimum monthly payments across all your debts. Credit cards, personal loans, a car finance agreement, buy-now-pay-later balances, anything with a scheduled monthly payment. Add them together.
Divide that total by your monthly take-home pay (after tax, National Insurance, pension and any other deductions). Multiply by 100.
That percentage is your Debt Drag score.
Example: if your take-home is £2,400 and your minimum payments total £360, your Debt Drag score is 15. Fifteen per cent of your income is committed to debt before you reach food, rent, bills or savings.
What the bands mean
Under 10 per cent: manageable. Debt exists but is not structurally limiting your cashflow. You have room to direct money toward savings or overpayments if you choose.
10 to 20 per cent: under pressure. Debt is taking a meaningful slice of your take-home each month. It is not necessarily a crisis, but it is constraining what you can do with the rest of your money.
Over 20 per cent: high drag. This is the range where debt starts to crowd out everything else. Building any kind of savings buffer becomes very difficult because such a large proportion of income is already spoken for.
These bands describe the cashflow pressure from debt service. They are not a measure of how "bad" you are with money. Many people in the 10 to 20 per cent band are there because of a one-off event, a period of lower income, or a financing decision that seemed sensible at the time. The score describes the current structural situation, not your character.
Why minimum payments are the right measure
You might be paying more than the minimum. If so, your actual payments will be higher than the score suggests. But the minimum payments are the committed floor. Even if your income dropped tomorrow, these amounts would still be due.
The score is therefore a measure of structural obligation, not just current behaviour.
This distinction matters. Someone paying £500 a month on a card with a £100 minimum is technically carrying less structural drag than someone with three separate £120-minimum payments across different lenders, even if the total currently paid is similar.
How to reduce your Debt Drag score
The score falls when either of two things happens: the minimum payment total comes down, or your take-home goes up. In practice, the most reliable lever is reducing the minimum payments.
Overpaying a debt reduces the balance. As the balance falls, the minimum payment typically falls with it (for credit cards and revolving credit). This frees up committed cashflow over time.
Clearing a debt entirely removes its contribution to the score completely. The month that commitment drops off your outgoings, every pound of it becomes available again.
Which debt to target first is a decision that depends on your specific situation. Two common approaches are paying off the highest interest rate debt first (which minimises total interest cost) or paying off the smallest balance first (which removes a commitment faster and builds momentum). Neither is objectively correct. Both work.
The Debt Drag tool on this site calculates your current score and projects how it changes as balances reduce over time, so you can see the trajectory clearly.
If you have multiple debts and are unsure where to start, StepChange (stepchange.org) and MoneyHelper (moneyhelper.org.uk) both offer free, impartial guidance with no obligation. There is no income level below which this help becomes unavailable.
The goal
A Debt Drag score under 10 per cent gives your cashflow room to work. Money that is not committed to minimum payments is money you can direct toward a buffer, toward savings, toward the things that actually move your financial position forward.
The score is a diagnostic, not a verdict. It tells you where you are, so you can decide where to go next.