> ## Documentation Index > Fetch the complete documentation index at: https://harnesscalendar.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Manage your plan > Upgrade, switch billing periods, update your card, or cancel. Everything about your own Harness subscription lives at **Settings → Subscription**: your current plan, the next renewal, your card, your receipts, and the buttons to change any of it. For what each plan includes, see [Plans and limits](/settings/plans-and-limits). ## Upgrade On the Hobby plan or during a trial, choose **monthly** or **annual** billing from the upgrade control and complete checkout. Your plan is active the moment payment goes through. ## Switch between monthly and annual Open the plan change dialog from your plan card: * **Moving up** (monthly → annual): you pay the prorated difference today and the new period starts now. * **Moving down** (annual → monthly): the switch happens at your renewal date. Until then a banner shows the pending change, with **Keep current plan** to cancel it. ## Update your payment method The payment method row shows the card on file. **Manage in Stripe** opens a secure Stripe page to replace it; nothing about your plan changes. ## See your receipts **Billing history** lists your recent Harness invoices, each linking to a Stripe-hosted receipt you can download for your books. ## Cancel Click **Cancel subscription**, pick a reason, and confirm. Cancelling is never immediate: your plan runs to the end of the period you've paid for, and the page shows the date. Until that date a **Reactivate** button undoes the cancellation with one click. Cancelling never deletes anything. At the period's end you move to the Hobby plan with all your data. If you're over 5 active students at that point, Harness asks you to pick who stays active; see [Plans and limits](/settings/plans-and-limits).