Salaam
For those that miss any days of fasting during Ramadan, there are two types of missed fasts. For any days missed through necessity, Fidya is payable.
For any days missed unnecessarily, Kaffara is payable. What is Fidya?When someone cannot fast in Ramadan and cannot make them up afterwards (due to ill health or pregnancy) they pay for someone else to be fed.
How much is payable?It is at a rate of £4 per each day that is missed.
(This should provide one person with 2 meals or two persons with 1 meal.)
If someone misses all the fasts of Ramadan, it would amount to £120. What is Kaffara?Kaffara is the compensation that you should give if you deliberately miss or break a fast in the month of Ramadan without a valid reason.
What is the required payment?
To atone for the missed/broken fast, someone must either fast continuously for 60 days, or feed 60 poor people at a rate of £4 per day per person. This amounts to £240 Kaffara for each missed/broken fast.
http://www.islamic-relief.org.uk/Fidya_and_Kaffara.aspx