Say you buy something on July 1 - you've go until August 25th to pay the amount in full before it starts incurring interest. Most credit cards work this way afaik.swordfish1 said:so how to you interpret the part "... have a further 25 days at the end of every month ...".
If what you said above is the case, then you can't have further 25 days at the end of EVERY month, because there will be only "one" FURTHER 25 days at the end of the first 3 months, and ONLY 25 days thereafter!
So it is roughly 55 days from the date of purchase.