9. How pension credit is paid
For people who started claiming pension credit before 6.4.10, it is normally paid weekly in advance on a Monday. If you reach pension age from 6.4.10 onwards, it is normally paid weekly, fortnightly or four weekly in arrears, with the payday determined by your national insurance number.
If your pension credit payment is less than £1 a week, it may be paid at 13-week intervals in arrears.
, regs 26B & 26BA