Statute of Limitations Diary Checklist: A Practical Checklist

Summary. More claims die on the calendar than on the merits, and the failure is almost never a forgotten date. It is an accrual assumption nobody tested, a repose period nobody looked for, or a notice-of-claim deadline that ran months before the limitations period anyone was tracking. This checklist builds the discipline that prevents each: an intake analysis listing every claim with its own period and accrual rule, a calculation from the earliest defensible accrual date, three calendared warnings, and a closing memorandum that preserves the analysis. It also covers the defense side, where limitations is waived if not pleaded.

What this checklist is for. Establishing and running a limitations diary at intake and through a matter. For the doctrine, see Statutes of Limitations, Accrual, and Tolling.

Phase 1 — At intake, in writing

List every potential claim separately, including alternative theories you may not ultimately plead. Claim preclusion will extinguish what you omit, and limitations may extinguish it sooner.
For each claim, identify the applicable period, with a citation to the statute — not to a chart or a memory.
Test the characterization. Many states apply the malpractice period to any claim against a professional regardless of how it is pleaded, and the gravamen frequently controls over the label.
For each claim, identify the accrual rule in the governing jurisdiction: injury or occurrence, breach, or discovery — and if discovery, whether it requires knowledge of the injury only, or also of causation, or also of the wrongdoer's identity.
Identify the earliest plausible accrual date and the latest defensible one, with the facts supporting each.
Search for a statute of repose. Product liability, improvements to real property, professional services, and securities are the usual places. Identify the triggering event and the date it occurred.
Identify any conditions precedent with their own, shorter deadlines: notice of claim to a public entity (often 60 to 180 days, and frequently jurisdictional), administrative exhaustion, pre-suit expert affidavits, contractual notice and cure, and mediation requirements.
Identify any contractual limitations period in the governing agreement, and whether it is enforceable.
Consider choice of law: the forum's period, any borrowing statute, and whether a built-in period travels with the claim.
Note any tolling that may apply — minority, incapacity, military service, bankruptcy, class action tolling, or 28 U.S.C. § 1367(d) — but do not use it to set the deadline.

Why this matters. The intake sheet is the whole system. An hour spent producing it is worth more than any brief written later about why the clock should not have run.

Phase 2 — Setting the deadline

Compute the filing deadline from the earliest plausible accrual date, not the latest.
Subtract margin — thirty days is a reasonable default — to produce the internal deadline.
Where a repose period is shorter than the limitations period, use the repose date.
Where a condition precedent has its own deadline, treat that as the real deadline and calendar the limitations date separately.
Enter three calendar warnings — 180 days, 90 days, and 30 days before the internal deadline — assigned to a named person, not to a group.
Enter the deadline in the firm's docketing system, not only in a personal calendar.
Record the basis for the date in the matter file, so a successor can evaluate it.

Phase 3 — Rules the system must follow

Never rely on a tolling theory to set a deadline. File within the period and argue tolling only if you must.
Never rely on relation back. Name every plausible defendant the first time and dismiss later; under Rule 15(c) a "John Doe" substitution is generally not a mistake and does not relate back in most circuits.
Update the diary when facts change, particularly when discovery reveals earlier knowledge than the client reported.
Re-run the analysis when a new claim, a new defendant, or a new jurisdiction is added.
Check the savings statute before agreeing to any voluntary dismissal, and confirm it covers the dismissal type and has not been used already.
Confirm whether the state permits service after filing to complete commencement, or whether the action is commenced only on service — a distinction that has ended cases.
Confirm the filing deadline calculation for weekends and holidays under the applicable rule, and do not assume the federal rule applies in state court.

Phase 4 — Declining a matter

Send a non-engagement letter promptly.
State that the firm is not representing the prospective client and has not evaluated the merits.
Identify the approximate limitations deadline, with a caution that the date may be earlier than stated and that other deadlines may apply.
Urge the prospective client to consult other counsel immediately.
Return any documents provided, and keep a copy of the letter and proof of delivery.

Why this matters. The non-engagement letter identifying the deadline is the single most valuable risk-management document a firm produces, and its absence is a recurring source of malpractice claims.

Phase 5 — Defense side

Plead limitations as an affirmative defense in the answer, in every case, without exception. Rule 8(c) requires it and failure generally waives it.
Plead statute of repose separately where applicable, because the analysis and the available responses differ.
Plead laches where the claim is equitable.
Develop the timeline in discovery: interrogatories and requests for admission on when the plaintiff first learned of the injury, its cause, and the defendant's role.
Request documents showing earlier knowledge: complaints to the company, internal memoranda, communications with other advisors, prior consultations with counsel, and insurance claims.
Depose the plaintiff on the chronology early, neutrally, before the significance is apparent.
Subpoena third-party records — medical, financial, regulatory — that establish notice.
Where the dates appear on the face of the complaint, move under Rule 12(b)(6); otherwise file an early, targeted summary judgment motion on limitations alone.
Confirm no tolling agreement was signed, and if one was, read its scope, its parties, and its termination mechanics carefully.

Phase 6 — Tolling agreements

Define the claims covered broadly — "all claims arising from the transaction" rather than a list that omits something.
Define the parties covered, including affiliates, successors, and individuals.
State the effect precisely: whether the period stops and resumes, or whether the defense is waived for a fixed window.
State that the agreement does not revive claims already barred and that neither party admits anything.
Provide a termination mechanism with notice — typically thirty days — so the plaintiff has time to file.
Obtain signatures from every entity that might be sued.
Calendar the termination date and the resulting filing deadline.

Phase 7 — Closing the matter

Record the limitations analysis in the closing memorandum rather than deleting the diary entries.
Note any related claims with continuing periods — indemnity, contribution, warranty — and their accrual rules.
Note any repose period still running.
Retain the file for the applicable retention period, which should exceed the longest applicable limitations period.

Common mistakes

Assuming the discovery rule applies in a jurisdiction that counts from injury.
Missing a statute of repose that expired before the claim accrued.
A government notice-of-claim deadline that ran months before anyone looked at limitations.
Characterizing the claim to fit the longer period, when the gravamen controls.
Relying on relation back to add a defendant identified after the period ran.
Relying on class action tolling across jurisdictions, where cross-jurisdictional tolling may not be recognized.
A voluntary dismissal taken without checking the savings statute.
A contractual one-year period in the agreement nobody read.
No non-engagement letter, and a prospective client whose claim expired.
Limitations not pleaded in the answer, and waived.

Primary authority

Federal catch-all: 28 U.S.C. § 1658 (four years for claims arising under post-1990 statutes); 28 U.S.C. § 2401(a) (six years against the United States).
Supplemental claims: 28 U.S.C. § 1367(d).
Sales of goods: UCC § 2-725 (four years from tender, reducible to one by agreement).
Bankruptcy: 11 U.S.C. § 108; § 546(a).
Relation back: Fed. R. Civ. P. 15(c).
Cases: Corner Post, Inc. v. Board of Governors, 603 U.S. 799 (2024); CTS Corp. v. Waldburger, 573 U.S. 1 (2014); Krupski v. Costa Crociere S.p.A., 560 U.S. 538 (2010); China Agritech, Inc. v. Resh, 584 U.S. 732 (2018).

This checklist is educational and not legal advice. Limitations periods, accrual rules, tolling doctrines, savings statutes, and notice-of-claim requirements vary substantially by jurisdiction and by claim type. Consult qualified counsel promptly; a delay of days can be dispositive.