How to Rent Out a Room in Your Home and Earn Tax-Free Income

The Rent a Room scheme is a government programme that allows owner-occupiers and tenants with a landlord's permission to earn up to seven thousand five hundred pounds per year tax-free from renting furnished accommodation within their home. This threshold — which works out at six hundred and twenty-five pounds per month — covers the majority of lodger arrangements in most UK regions outside London. Income below the threshold requires no declaration to HMRC. Income above it is taxed on the amount over the threshold, not the full amount.

Lodger versus tenant: the practical difference

A lodger lives in your home alongside you and typically has a licence to occupy a room rather than a tenancy. This distinction matters significantly because licensees have fewer legal protections than tenants and can be asked to leave with relatively short notice — usually the same as the notice period in the agreement, or a reasonable period if no agreement specifies one. A lodger arrangement is therefore more flexible for the homeowner than a standard assured shorthold tenancy and can be ended more readily if the arrangement does not work out. You should always have a written lodger agreement in place, even if it is a simple one.

What to consider before taking in a lodger

Check whether your mortgage lender or lease permits a lodger — most mortgages allow it but some have conditions, and letting without permission is a breach of most mortgage terms. If you rent rather than own, you need your landlord's written permission before subletting any part of the property. Your home insurance should be notified, as having a paying occupant changes the risk profile of the policy. Your council tax bill may also change if your single occupancy discount was in place — adding a second adult removes it, which is worth factoring into the income calculation.

Setting the right rent and finding a lodger

Researching comparable rooms in your area on SpareRoom, Zoopla, and Rightmove gives a reliable guide to achievable rent for your location, room size, and what is included. Including bills in the rent simplifies management and is attractive to lodgers who want predictability. Advertising on SpareRoom, which dominates the lodger market in the UK, is the most effective route to enquiries. Interviewing prospective lodgers in person, checking references, and trusting your instinct about fit matters because this is someone sharing your home, not just a financial transaction.

The tax position and keeping it simple

If your annual lodger income stays below seven thousand five hundred pounds, you do not need to declare it to HMRC or register for Self Assessment. Above the threshold, you declare the excess through Self Assessment and pay tax only on the amount over the limit. If you share your home with a partner and you both have an interest in the property, the tax-free threshold halves to three thousand seven hundred and fifty pounds each. The simplicity of the tax treatment is one of the most attractive features of the arrangement for people who want additional income without significant administrative overhead.