Prefill recurring choices with URL parameters and distinguish finite months

You can add URL parameters to a public giving form to preselect recurring choices. The form must allow the requested schedule and duration. These parameters do not create a subscription or authorize a payment.

Use the following examples and test the actual form before sharing:

• ?recur=true&period=monthly&recur_length=3 selects monthly payments over three years.
• ?recur=true&period=yearly&recur_length=3 selects annual payments over three years.
• ?recur=true&period=limited_months&recur_length=12 selects twelve monthly installments.
• ?recur=true&period=monthly&recur_length=indefinitely can select indefinite giving when the form permits it. Confirm the displayed choice before sharing.

Use & instead of ? if the URL already contains parameters, and preserve the original tracking parameters. Some form controls also recognize recurring=true; test the final checkout rather than assuming all form layouts interpret every variant identically.

The finite-month list starts at two months and is capped at 60 on indefinite-enabled forms. Indefinite giving is a separate monthly/yearly choice; it is not an extra item in the finite-month list. Check the selected amount, frequency and duration together before distributing a link.