Maternity pay

I would gather evidence for your earnings during the qualifying period and calculate your 90% average weekly earnings. As it's a statutory payment that the business pays you and claims back off the government they are not able to decide to not give this to you. You are entitled to it.

But just be really careful your calculations are correct and you don't end up losing out because you've got the wrong end of the stick or something!

I had similar situation and after I’ve raised it, they explained to me that the first smp, the higher rate, would be calculated based on a period of time based on what you were actually paid so that includes the bonus. The rest is calculated based on the salary so it will not include the bonus you get as an extra but it’s calculated taking on your offered salary per year/12 months depending on how many months you’re taking. I don’t know if that makes sense to you but in HMRC they use 2 different names: pay and salary and they differ as the salary is what’s in your contract and the “pay” is what you get monthly and that includes any extra money you may be getting (example discretionary bonus) x

Unless, of course, they’ve given you different calculations before maternity and it was better, in this case, I would take it to your HR and ask what the new calculation will look like and raise concern if it happens to add up to be, in fact, lower then what they’ve presented you the first time x