A tenancy for years is a lease granting the tenant exclusive possession for a fixed and certain period (the term can be days, months or years). It is contrasted with a periodic tenancy, which continues indefinitely by periods. The expression is a common-law description; in England and Wales and Ireland the corresponding legal estate is a “term of years absolute” (Law of Property Act 1925; Land and Conveyancing Law Reform Act 2009). In Northern Ireland the concept is likewise recognised in leasehold practice. In Scotland the equivalent is a fixed-term lease; “tenancy for years” is not the usual terminology.Key features are certainty of maximum duration, automatic expiry on the end date, and early termination only under agreed break clauses, surrender, forfeiture/irritancy or statutory grounds. On expiry, holding over may create a new periodic tenancy or statutory continuation; in Scotland, tacit relocation may extend the lease.Typical uses include fixed-term assured or assured shorthold tenancies, student lets and commercial leases. Formalities and registration/protection vary by jurisdiction (for example, registration is required for longer terms to bind successors in title). The concept is significant for drafting, remedies (e.g., forfeiture/irritancy), security of tenure, and ensuring compliance with certainty-of-term requirements.