Statutory maternity pay (SMP) There are in general two rates of SMP: the higher rate and the lower rate. During the first six weeks of the maternity pay period, the higher rate is payable, which is 90% of the employee's normal weekly earnings during the eight weeks immediately before the 14th week before the expected week of confinement. After the first six weeks, the lower rate is payable for the remaining part of the maternity pay period. The lower rate is the lesser of: • the higher rate, and • a set rate, currently £140.98 per week with effect from 6 April 2017 The basis for calculating the higher rate is actual earnings averaged over the relevant period. Where the employee is paid at intervals of one or more months, her monthly pay is converted to a weekly average by dividing the total pay by the number of pay months within