Different tenancies have different rules on how rent can be increased. You can find information about different types of tenancy agreements if you are not sure which type you have.
With any tenancy it could be worth speaking to your landlord if they want to increase your rent, to see if they would be willing to negotiate.
If your tenancy is fixed term your landlord can only choose to increase the rent once the fixed term ends (the exceptions to this are if you agree to the increase or if there is a clause in your agreement saying that the rent will be increased before the fixed term ends).
If you are an assured or assured shorthold tenant your landlord will be charging you a ‘market rent’. This means that the amount of rent you are charged is based on the availability and cost of other similar accommodation in the area.
If you are an assured tenant, you have an increased chance of influencing when and by how much the rent is increased.
If your landlord wants to increase your rent and you are an assured shorthold tenant, this could be more difficult to challenge. This is because if you have an assured shorthold tenancy your landlord can evict you quite easily if you don’t agree to pay the rent.
If you think a proposed rent increase is unfair compared to the market rent, you may be able to appeal to a Rent Assessment Committee (through the Residential Property Tribunal).