There is no fixed percentage cap on how much a private landlord can increase rent in England. No universal 3%, 5% or inflation-linked ceiling applies to every property. That does not mean a landlord can raise the rent without constraint. Since the first phase of the Renters' Rights Act 2025 reforms took effect on 1 May 2026, most private landlords must use a prescribed statutory process to increase rent. The tenant may challenge the proposal, and the First-tier Tribunal will