Miss P works 2 days per week at £80 per day but for only 31 weeks of the year.
No retainer fee for the other weeks? I assume the agreement is for no retainer.
Holiday entitlement is 31/52 x 11.2 days = 7 days.
5.6 weeks annual entitlement for a full-time employee.
To keep it simple, I'll say the nanny works 10 hours per day (need to calculate holiday in hours as it is atypical).
So 20 hours x 31 weeks = 620 hours
620 / 46.4 (52 weeks - 5.6 weeks) = 13.36
Therefore Holiday entitlement = 5.6 x 13.36 = 74.82 hours. Which if 10 hour days = 7.482 days, rounding up to give 7.5 days.
This calculation assumes that holiday CANNOT be taken during term-time, only during school holiday periods.
That is how I would calculate it. It is hard to calculate term-time only workers holiday entitlement. Just looked on Direct.gov and they have removed details of how to calculate it, due to it undergoing revision.
So could be argued that there is another £40 of holiday pay due. It depends how it is calculated.
That however isn't the issue being discussed on this thread - though maybe something to look at.
So... what you have used is:
31 wks x £160 = £4960
Holiday pay - 7x 80 = £560
4960 + 560 = £5520
£5520 / 12 = £460
So Annual Gross (assuming BR tax code) would be £7089. Employers NI £176 calculator.kistax.com/
You asked the payroll company to operate Monthly Pay and that you wanted M1..M12 to all be the same in terms of nannies NET pay.
I would expect a payroll company to be able to do that. It's not something that you would be able to do yourself, in my view as doing Net to Gross gets a bit complex.
The payroll company seems to have done Weekly pay, not Monthly. So to me it looks as though they didn't do as you had asked... which was to operate Monthly payroll.
So I would wonder if they are ditching you as a client because you want them to operate Monthly pay, where as they operate Weekly pay. Is that your feeling as well?
Earlier I wrote:
"You can SELL this idea to your nanny by saying that in April 2011 the personal tax allowance is going up... so with a gross salary they get a bit more money, with NET you get to keep the increase!"
Alas given the low amount involved and that the tax code being used may well be BR. I don't now think it will make a difference (though will in their other job). I assume they have another job, as your job is only 2 days per week. However it is always best to do pay as Gross, as then you can use HMRC lookup tables and website to do the calculations yourself if you need to. Also means the nanny can compare salary with other jobs - as all other jobs (I don't know of any which are paid Net) are paid Gross.