Evergreen Contracts: Counting the Window You Must Not Miss

An evergreen contract renews itself unless somebody stops it, and what stops it is a written notice delivered inside a window counted backwards from the renewal date. The counting is where the money goes. A 60-day notice period on a contract renewing Monday 1 March 2027 makes Thursday 31 December 2026 the last timely day; if the clause also bars notice more than 90 days out, the window opened on 1 December 2026 — October is as invalid as January.

Where the clause hides, and the three obligations in it

Auto-renewal language rarely sits under a heading saying "Auto-Renewal." It hides inside Term and Termination as one subordinate clause: the agreement "shall automatically renew for successive one-year periods unless either party provides written notice ... at least ninety (90) days prior to the end of the then-current term." Three obligations hide there, and a non-renewal fails on any one:

• Form. "Written notice" is defined further down, in the Notices section: certified mail, courier with signature, or delivery to a named officer. Email is often excluded, or valid only if a hard copy follows — a perfectly timed email under a certified-mail clause is a failed notice.
• Recipient and address. Notices sections name an address and say how it may be changed. Absent that step, the printed address still governs.
• Timing. Both edges of the window, not just the near one.

Statutory backstops are narrower than assumed. New York's General Obligations Law (§§ 5-901 and 5-903) makes an auto-renewal clause in a service, maintenance, or repair contract unenforceable unless the provider reminds the customer 15 to 30 days before their deadline — and it is not consumer-only. California's Automatic Renewal Law is. Neither saves a negotiated master services agreement; this is guidance on counting, not legal advice.

Anniversary vs. effective vs. signature date

Three dates on a typical contract differ: the signature date, the effective date (often backdated — "effective as of 1 January"), and the commencement date, when the term clock starts, often a go-live date set in an order form. The anniversary counts from whichever the Term clause points at: a contract signed 14 March, effective as of 1 January, with services commencing 1 April could end 31 December, 31 March, or 30 June depending on which sentence you read. Resolve it once in writing, then audit at order-form level — cancelling the MSA does not kill an order form that is mid-term.

The window has two edges

Most people internalise the closing edge — "at least 90 days prior" — and forget that many clauses also cap how early notice may be given: "not more than 180 days nor less than 90 days prior to expiration." Notice delivered 200 days out is premature and can be treated as ineffective; the counterparty wants a current-year decision, not a standing cancellation filed at signature. Four mechanics decide the close calls:

• The anniversary is excluded. "At least 60 days prior to the renewal date" treats the renewal date as day zero. For a 1 March 2027 renewal, day 60 backwards lands on 31 December 2026 — the last timely day, and not one to aim for.
• Calendar or business days. Notice periods are usually calendar days; if the clause says business days you need the counterparty's holiday list, not your own — our business-day counting guide covers the method.
• Dispatch or receipt. "Deemed given upon receipt" puts transit inside your window: a 90-day period with a two-day courier means the envelope must leave 92 days out, not 90.
• Rollover. Many contracts have no rollover clause, so a deadline landing on a Sunday stays there — and where one exists, whether it helps a backwards-counted deadline is ambiguous. Act earlier.

Four windows, counted

Renewal date treated as day zero. Business days exclude weekends and US federal holidays.

Each row hides a lesson. The facilities window opens on a Saturday, so the first practical day is Monday 4 January 2027 — and that contract cannot be cancelled in November at all, leaving a December budget cycle unable to act until the new year.

The equipment lease is worse than it looks. Under a receipt rule the letter must arrive by 2 June, and Memorial Day falls on Monday 31 May 2027, inside the transit window. Posting certified mail on Tuesday 25 May puts the real deadline 128 calendar days out: a 120-day contractual window is a 128-day operational one.

The insurance row shows why business-day periods must be pinned down in writing. Four federal holidays fall between late October 2027 and that renewal: Veterans Day (Thursday 11 November), Thanksgiving (Thursday 25 November), and — because 25 December 2027 and 1 January 2028 both land on Saturdays — observances on Friday 24 and Friday 31 December. Excluding all four gives Tuesday 26 October; excluding only Thanksgiving and Christmas gives Thursday 28 October; excluding weekends alone gives Monday 1 November. Same clause, same calendar, six days of spread.

Multi-year terms and the cost of one miss

A missed notice on a one-year evergreen costs one more year; on "successive three-year terms" it costs three. A term running 30 September 2027 to 30 September 2030 is 1,096 days, not 1,095, because the 2028 leap day sits inside it — the off-by-one our leap year pitfalls guide covers. Then check two clauses. A price escalator reading "the lesser of CPI or 5% at each anniversary" bites at auto-renewals too, so three years of compounding is the real cost, not the base fee. And a termination for convenience caps the damage at that notice period plus any early-termination fee — a clause often found only after writing off the window.

The reminder ladder and the annual register

Build a ladder of absolute calendar dates counted backwards from the anniversary, each step with its own owner. For a 90-day window:

• Minus 180 days — commercial review opens: usage data, service issues, alternatives. Nobody decides yet.
• Minus 120 days — decide: renew, renegotiate, or exit. Confirm the earliest valid notice date if there is an early cap.
• Minus 105 days — notice drafted and reviewed if exiting; renegotiation opened if not.
• Minus 100 days — send, deliberately early, so a courier failure or wrong address is still correctable.
• Minus 85 days — confirm delivery; file the signed receipt or tracking record with the contract.

Set these as fixed dates in a shared calendar, not relative reminders in one person's inbox: the failure mode is the contract owner leaving in month seven with the series in a personal calendar.

Underneath sits one register, a row per agreement — counterparty, anniversary, notice period, notice form, notice address, window opens, window closes, owner. Rebuild it annually and reconcile against accounts payable: vendors you pay who are not in it are the contracts that renew unnoticed. A blank anniversary is not a gap in the register; it is an unread contract.

For the arithmetic: 90 days from today counts a deadline forward, the days between dates calculator measures effective date to anniversary, and 45 business days from today works in weekdays. For months, 6 months from today handles the month-end cases day math gets wrong.