Meaning that the amount of the (monthly?) repayment has a ceiling, or maximum limit. Interest rates may go up and down, the amount of the repayment may increase but there will be a limit beyond which it will not go. When it comes to rates, it is common to refer to “rate-capping”, and “capped rates”. (In the case of mortgags for house purchases, for example). In the case of the repayments (échéances, mensualités), it is more common to see them being referred to as “maximum repayments”. Never the less, there are some examples of repayments being referred to as “capped”.

1 - http://www.royalbankscot.co.uk/personal/mortgages/capped.htm

Personal Finances

Capped Rate Mortgages

Ideal for the borrower who does not wish to exceed a set rate but still wishes to benefit from any drops in the Royal Bank’s standard variable rate
3 year Capped until 01/11/04, 36 repayments of a maximum of £399.52 followed by 264 repayments of £421.41

2 - www.jubilee2000uk.org/relief_before.html - 8k (page does not exist any more but the brief description is useful)

The Paris Club agreed that a 20% debt-service-to-export ratio was totally unacceptable and capped repayments at 6%.

3 - http://www.buyingacar.co.za/Paying.htm

One finance house offers a scheme aimed at providing tax-orientated customers with a combination of a linked interest rate and fixed or capped monthly repayments. In effect, it minimises the effect of upward rate movements to the end of the contract, yet allows clients to benefit from downward rate movements immediately.