A concurrent condition is a contractual condition that must occur or be performed at the same time as the other party’s corresponding obligation, so that each party’s duty is dependent on the other’s simultaneous performance. In practice, it often arises in sale of goods, construction, commercial and property transactions, where (for example) payment and delivery, or completion and transfer of title, are intended to take place concurrently.In UK and Irish contract law, concurrent conditions are not generally defined in statute but are recognised and developed through case law and common law principles on conditional obligations and dependent promises. They are contrasted with conditions precedent (which must occur before an obligation arises) and conditions subsequent (which bring an existing obligation to an end).Where obligations are concurrent, neither party is in breach if it is ready and willing to perform but the other is not. This affects the right to terminate, to withhold performance, and to claim damages. Usage and legal effect of concurrent conditions are broadly consistent across England and Wales, Scotland, Northern Ireland and Ireland, subject to local authority on contract interpretation and remedies.