Estimate your Monzo Flex monthly payments, interest, and total cost based on real APR rates and repayment terms.

This tool helps you estimate how much you'll pay when using Monzo Flex. Works for 3–24 month plans with accurate 0% and 24% APR rules.

Monzo Flex Calculator

Purchase Amount (£)

Repayment Term (months)1 month2 months3 months4 months5 months6 months7 months8 months9 months10 months11 months12 months13 months14 months15 months16 months17 months18 months19 months20 months21 months22 months23 months24 months

Monthly Payment: £5.26

Total Interest: £1.60

Total to Repay: £31.55

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Last updated on Jul 13, 2025