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Your debt payoff guide

Two decisions matter: whether you keep paying the same total, and which debt gets the extra money.

All guides 10 min read · Free for everyone

1. Minimums only — let your monthly total fall

Pay each debt’s required monthly payment. When one finishes, keep that freed-up money rather than moving it to another debt. It gives your budget breathing room, but remaining debts usually take longer.

Example: you pay £50 on one debt and £150 on another. After the £50 debt clears, your total payments fall from £200 to £150. Card minimums may change each month; Ledger uses the payment you enter as a fixed estimate.

2. Rollover — keep the same monthly total

When one debt clears, put its former payment towards another debt. In the example above, you continue paying £200: the remaining debt receives its £150 plus the freed-up £50.

This is a plan you carry out with your lenders. Ledger does not move money or automatically change any direct debit. Only keep the higher total if you can afford it.

3. Avalanche — highest interest first

Keep up the required payments on every debt. Aim spare money at the debt with the highest current interest rate; when it clears, move on to the next highest. For ordinary debts with stable rates and no fees or restrictions, this usually saves the most interest.

A £5,000 card at 29.9% gets spare money before a £500 balance at 0%. A promotional rate ending, charges or a settlement rebate can change the best order.

4. Snowball — smallest balance first

Keep up required payments, then put spare money towards the smallest balance. Each cleared debt is a quick win and frees another payment. It can be easier to stick to, but may cost more interest than avalanche.

In that same example, the £500 balance gets spare money first, even at 0%.

A worked comparison — fictional debts

Imagine £500 at 0% with a £25 payment, plus £5,000 at 29.9% with a £150 payment. No new borrowing, fees or rate changes. Required payments total £175 a month.

Minimums only

£175 initially; falls as debts clear

73 months

£5,819.81 additional interest

Rollover, highest rate first

Keep £175 a month until the final payment

60 months

£4,871.88 additional interest

Avalanche + £50 extra

Keep £225 a month; interest-charging card first

37 months

£2,806.41 additional interest

Snowball + £50 extra

Keep £225 a month; small balance first

38 months

£2,972.26 additional interest

Only compare avalanche and snowball directly here: both use the same £225 budget. Their extra £50 also explains some of the improvement over the £175 plans. Dates and interest are estimates; final payments may be smaller.

How the payoff maths works

Balance is what remains to repay. Interest is the cost added for borrowing. APR is an annual comparison measure that may include fees; it is not always your contract’s interest rate.

Ledger estimates each month as: balance + new interest − payment. For ordinary capital balances, it approximates monthly interest using balance × APR ÷ 1,200. Lenders may use a different contractual rate, daily interest and fees, so this is not an exact lender quotation.

Your £12,000 example: at 11.9% using this monthly approximation, the first month adds £119. A £266.33 payment reduces capital by £147.33, leaving £11,852.67. Repeating this gives 60 payments and about £3,979.59 additional interest. Later interest falls as the balance shrinks.

For a constant monthly rate r, balance B and payment P, the textbook estimate is n = −ln(1 − rB/P) ÷ ln(1 + r). Round n up to whole payments. It applies only when P > rB; at 0%, use balance ÷ payment instead. Ledger simulates month by month to handle different balance types.

Try a repayment example

An illustration only — nothing here changes your debts.

60 monthly payments

£3,979.59 additional interest · £15,979.59 total remaining repayments

Uses APR ÷ 12 as a monthly-rate approximation. Your lender’s actual rate, daily interest and fees can produce a different result. The final payment may be smaller.

Not every debt follows the same rules

  • Credit and store cards: check current APR, minimum payment, new spending, fees and when 0% offers end. Multiple rates on one card need particular care.
  • Loans and finance: check whether the balance is capital or all remaining repayments. Confirm overpayment rules and any early-settlement reduction.
  • PCP car finance: a final balloon payment still needs funding if you keep the car. Ledger’s regular-payment estimate assumes the balloon is settled separately; it is not forgiven. Returning or refinancing the car depends on your agreement.
  • Overdrafts: interest, daily balance changes and fresh spending affect progress. An agreed paydown is not necessarily the bank’s required repayment.
  • Buy now pay later: check every instalment and late fees. Ledger models this category at 0%; if your agreement charges interest, that estimate will not describe it correctly.
  • UK student loans: repayments often depend on income, loan plan and write-off rules. A normal fixed-payment payoff date may be inappropriate. Do not overpay just because a generic calculator suggests it.
  • Mortgages, tax debts and arrears: repayment terms and consequences vary. Seek tailored help rather than relying on this simple comparison.

Your next three steps

  1. Check each balance, payment and rate against a recent statement.
  2. Choose an affordable total after essentials, and confirm whether overpayments are allowed.
  3. Use Ledger’s countdown to compare minimums with rollover, and its payoff plan to compare repayment order. Recheck monthly and whenever anything changes.

Sources: MoneyHelper debt guidance and GOV.UK student loan repayment. Worked figures use Ledger’s stated model, not a lender quotation.

Keep your next step manageable

These guides are general education, not personal financial advice. Check your lender’s statements and terms before changing payments. If essentials or repayments are unaffordable, get free debt help rather than borrowing more.

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