Subscription Billing Calendar

How to use this calculator

Enter the start date, free-trial days, months per paid period and period count. Add cancellation notice days. Optionally enter a pause start and exclusive pause end, with a keep-anchor or reset-anchor policy.

Each month shift uses the original paid anchor, so January 31 can produce February 28 followed by March 31. Skip-collection mode preserves period boundaries. Reset mode ends the old period at pause start and creates a new billing anchor on pause end. No charge amounts or refunds are inferred.

A worked example

A subscription starting November 1 with a 14-day trial begins its first paid period November 15. Monthly renewals continue December 15 and January 15. A seven-day notice reminder for November 15 falls on November 8.

Does pausing always shift future renewal dates?

No. Some services pause collection while preserving their billing anchor; others restart billing. Choose the rule in your actual subscription. Calendar reminders do not cancel a subscription.

Further reading: Source workflow and conventions. Your entered rules determine this result.

Which calendar and years are supported?

Use Gregorian dates from 1900 through 2100, with results inside that range. Most daily plans are limited to 366 dates; academic terms and sprint plans allow up to 731. Forms limit the number of entries to keep calculations responsive. Holidays and policy rules come from your inputs. Date-only plans ignore DST; tools with time-zone inputs use the browser's time-zone data and explicitly resolve repeated times. Calendar exports preserve date-only markers or exact timed events as appropriate. Calculations run only when requested, without background polling.

What happens to my dates?

Calculations run on your device. Saving a calculation is optional and keeps it in this browser. A setup link contains the dates and settings you entered; anyone with the link can read them. Use one tab per saved calculator. Clear saved data from Privacy & settings.