What happens if you are in breach of contract?

If you are in breach of contract, the usual consequence is owing money damages, calculated to put the other party where they would have been if you had performed. It is a civil matter, not a criminal one.

The typical sequence is escalation, not ambush. A demand letter arrives first. Then negotiation or mediation, and only then small claims or a lawsuit. Most disputes settle because litigation costs more than the fix.

How serious a breach is depends on whether it is material. Delivering two days late is minor; never delivering is material and lets the other side cancel and claim damages. If you are heading toward a breach, say so early and propose terms. Renegotiation is nearly always cheaper than a judgment.

A clear client contract defines cure periods and remedies before anything goes wrong.