Example Calculation: £11 Gross per hour, 20 hours per week.
Nannies Salary: £11 Gross per hour
Number of hours per week: 20
Nannies Salary per Week: £220 Gross ? £11,471 Gross per Year
Employers National Insurance: £ 520 2013/14 tax year (calculation by MrAnchovy's PAYE Calculator)
Nanny Payroll: You can do this yourself or you can get a lot of a assistance from a Nanny Payroll Company such as PAYEforNannies who my employer has been successfully using for many years now. The cost of having a payroll company is around £115 a year (for monthly payroll). The payroll company will produce payslips and tell you when and how much to transfer to HMRC in terms of the deductions (Employee Tax, Employee NI) as well as your Employers NI.
Weekly Expenses Kitty (for activities/outings): £5 per day, you may find the cost increases during school holidays. Based on a 47 week year, nanny working 2 days per week, £470 total.
Nannies Travelling Costs Whilst On Duty: If your nanny uses their own car, then employers would usually reimburse the cost at £0.45 per mile (this is known as the Approved Mileage Rate). Employers can negotiate with their employee to pay less than this, though you should take into account your nannies costs of providing a car, car seats, suitable motor insurance to include transporting children for whom they care.
How many miles your nanny would do will vary. Consider the usual mileage they would do to take children to school and back, to get to toddler group, other outings. I would say that I can easily do 25 miles a day, often more especially during school holidays. Start recording the mileage you do in your car during the week, you may be quite surprised how quickly the mileage adds up even if you are just going to the local shops, library, playground, woods, PYO farm etc.
For a 2 day per week nanny I suggest factoring in at least 50 miles? so £22.50 per week, £1170 per year.
While your nanny is on duty, you give them food and drink. Increase in food bill, extra £3 a day maybe? Heating/Light will also be used more as nanny is around during some of the day, so another few pounds. If comparing with a childminder/nursery, lights wouldn?t be on at your home, heating may also be set low. If comparing with you staying at home, then there won?t really be much of a difference at all. There is also some additional wear and tear on the property.
Perhaps put all that together... say £8 per working day.
So 2 days x £8 = £16. 47 x £16 = £752 (47 weeks, as nanny has to take minimum of 5.6 weeks holiday)
Total Cost of Employing a Nanny For Two Days Per Week
£11,471 gross salary, Employers NI £520, Nanny Payroll £115, Activity Kitty £470, Mileage £1170, Food/Drink/Heat/Light/Misc. £752
Grand Total: £14,498 which over a year (52 weeks) is £278.81
So £300 was not that bad a guess 