I've recently found a new nanny to look after DSs, 2.9 and 9 months. She was via an agency and I of course have every intention of paying tax and NI on her wages in the long term. However, she is French and hasn't been in the UK for very long. She isn't Ofsted registered but is getting registered now at my request. She also doesn't have a bank account (???) and so has asked to be paid in cash twice a month. I'm don't mind doing this for a month but long term it'll be a pain in the neck and I would rather just pay her once a month direct into her bank account like I did with our old nanny. I've given her a draft employment contract but it just occurred to me that maybe I should hold off signing until I know the Ofsted registration is underway. I know that I need to give her an employment contract within a month of employing her although the question arises of when did I start formally employing her. I have used her for various trial days in December and she has probably worked about 2.5 weeks in total. I could probably get away with not signing the contract until end of Jan so am I ok to pay her in cash in January and not pay tax and NI on this amount? I know it's a risk but it seems fairly low if we only start formally employing her at the end of Jan.