It’s hard to put a round figure on how much a nanny will cost as there are many variables to take into account. It can depend on your location, whether you opt for live-in or live-out, if you go for full time or part-time, if you decide to share a nanny with another family etc. However, for a fully qualified nanny you will be looking between £200 and £500 per week net.
Given this, it is important to consider whether it’s worth you continuing to work. If your disposable income is not much more than your nanny’s salary, then it may not be worth your while to continue working, but instead stay at home and look after your children. It is down to personal circumstances and financial constraints and commitments.
Another important point to consider when looking at employing a nanny is whether you will be happy for them to look after your children in their own way in your house. Many people want to be in control and have their own way in how things are handled, particularly in their own home, and may find having a nanny troublesome for them. In other words, you need to be able to delegate responsibility to your nanny and be comfortable with how they do things.

Live in or live out?

This really depends on what you can afford, the size of your house, and how highly you value your privacy. While a live-in nanny is always there when you need her, it’s important for her and for you to have a clear understanding about time. What time of the day is her time for your children, what time of the day is her time for herself.

Who pays the tax and NI contributions?

When you employ a nanny, you are responsible for paying the tax and national insurance. The paperwork involved puts some people off, but it is actually not difficult. However, if you need help, there’s an employers help line for tax and national insurance queries: 0845 714 3143.

Can I employ an au pair instead of a nanny? Of course. It depends on what you are looking for. A qualified nanny is trained in dealing with children and how to handle the different situations you encounter when bringing up children. An au pair is not a qualified child carer but are for helping out in the home, babysitting, and looking after the children, perhaps taking them to school, to swimming lessons, etc.
They also become a part of the family and will normally expect to live in your house while employed as an au pair. Most au pairs are from abroad and come to the UK in order to improve their English. They are a lot cheaper than nannies and are often paid as little as £50 per week, although you provide their food and accommodation.

Courses and qualifications for a nanny
Interview questions - What nannies should ask their potential employers
Advantages and disadvantages of employing a nanny?
How much does a nanny cost?
Live in or live out?
Who pays the tax and NI contributions?
Added extras for the kids
Do you need a babysitter at short notice?