What is reliance interest and expectation interest?

Answer 1

Reliance interest is the losses which the innocent party has sustained as a consequence of relying on the wrongdoer's promise. The plaintiff is put back in the pre-contract position, that is, before they sustained losses. This remedy for breach is only used when it is impossible to prove or quantify the expectation interest.

Expectation interest is where the court grants the innocent party the amount that they would have gained if the contract had not been breached by the wrongdoer. This is the standard remedy for breach of a contract because it includes restitution and reliance.