Record the source date first
Keep the expiry or due date on the confirmed record. Then decide whether it needs an action reminder, how early it should arrive, and whether it repeats.
Separate personal and family responsibility
A reminder belongs to its creator unless they deliberately assign or share it. Household bills and subscriptions can become family tasks, but only after that shared responsibility is explicit.
Make acknowledgement visible
For shared work, show who has acknowledged the reminder and who marked it complete. That reduces duplicate effort and makes the current state easy to understand.
Use repetition carefully
Monthly or yearly schedules suit known recurring items. Do not infer repetition from one email alone; confirm the cadence and next due date before enabling it.