Do not agree to owe more than the project is worth
Without a cap, an error or delay on even a small project could leave you liable for the client's full actual damages, which can vastly exceed what you were paid. This is general information about liability clauses, not legal advice -- consult a local professional for your specific situation.
A cap protects both sides, not just you
A well-drafted liability cap gives the client a clear ceiling on what they can recover and gives you a predictable worst case, which often makes negotiations move faster instead of stalling on an open-ended risk neither side can price.
Frequently Asked Questions
If there is no liability cap, do I really owe unlimited damages?
Courts in many jurisdictions can adjust an excessive damages award using fairness principles, but without a clear cap written into the contract, you generally risk being liable for the full actual damages caused -- so it is safer to negotiate a cap up front.
What if the client refuses to include a liability cap?
If you have to accept outsized risk relative to the fee, consider renegotiating your rate instead, or propose a middle ground -- limiting liability to the contract amount except in cases of intentional misconduct or gross negligence.