Depends on your income. If you get any enhancements on SMP you will continue to pay everything but I. Lower amounts (I will continue paying tax and NI as I get paid extra on top of SMP from work)
I will have to yes as I get two lots of SMP from two jobs and occupational maternity pay which will put me over the threshold. So....it depends 😂
It's the same as any income so if you meet the threshold, yes!
If you are paid above the monthly tax free amount then yes, I returned from mat leave in December, and I paid both NI and tax on my maternity pay for the ten months I was off x
You won't hit the threshold for tax on the amount of mat leave but you'll still pay a small amount of NI. you can also freeze your pension for that duration if you wish also.