Understanding Discovery Rule and Tolling in Statute of Limitations
Published 2026-04-13 · Legal Niche Pros
FAQ
Can tolling and the discovery rule both apply to the same case?
Yes, in some circumstances — but the interaction is fact-specific and exactly the kind of question worth confirming with an attorney rather than guessing.
Does a statute of repose ever get extended?
Rarely. Statutes of repose are designed as hard outer limits and are much harder to toll than a standard statute of limitations.
Two legal concepts routinely change when a filing deadline actually falls, and confusing them is one of the most common mistakes people make when estimating their own statute of limitations.
The discovery rule
Under the discovery rule, the clock doesn't start on the date of the underlying act — it starts when the injury was discovered, or reasonably should have been discovered. This shows up often in medical malpractice, where a mistake during surgery might not be discovered until symptoms appear months or years later.
Tolling
Tolling pauses a clock that has already started, for a specific legal reason — commonly when the injured party is a minor (the clock often doesn't run until they turn 18), when a defendant is out of state and can't be served, or during certain bankruptcy proceedings.
A statute of repose is different from both: it's an absolute outer deadline that runs from the original act regardless of discovery, and in many states it cannot be tolled at all — meaning a claim can be barred even before the injured party knew they had one.