Free trial

What is a free trial?

A free trial is a limited-time period during which a customer can use a product or subscription at no cost, typically converting to a paid subscription automatically unless the customer cancels first. The mechanic that matters most is whether a card was collected upfront, since that single decision determines what happens by default on the day the trial ends.

Card required vs no card trials

Type	How it starts	What happens at trial end	Trade-off
Card required (opt-out)	Customer enters payment details upfront	Card is charged automatically unless the customer cancels first	Higher conversion rate, but fewer people start the trial
No card (opt-in)	Customer starts using the product with no payment details	Access ends unless the customer actively adds a card and subscribes	More signups, but a lower share convert to paid

Neither approach is universally better. Card-required trials suit products where the buyer already intends to purchase, a coaching membership or a paid community, where the trial mainly removes hesitation rather than driving discovery. No-card trials suit products competing on low-friction signup, particularly ones with a large top of funnel and a longer path to a purchase decision.

The trade-off is really about where a business wants to lose people. A card-required trial loses prospects at the signup form, before they see the product. A no-card trial loses that same friction later, at the trial-end decision, when the customer has to actively choose to pay rather than being carried into payment by default.

Neither loses fewer people overall; they just move the drop-off to a different point in the funnel.

How trial-to-paid conversion works

On the trial end date, a card-required trial attempts to charge the card on file, and the subscription becomes active the moment that charge succeeds. The default outcome is a paid subscription, and cancelling is the action a customer has to take to avoid it.

A no-card trial works the opposite way. It simply ends: access is paused or downgraded until the customer adds payment details to subscribe. The default outcome is no subscription, and subscribing is the action the customer has to take.

This is why no-card trials tend to show lower trial-to-paid conversion even when they attract more signups in the first place.

What happens when the charge fails at trial end

A card-required trial converting to paid is still just a payment attempt, and it can fail like any charge: an expired card, insufficient funds, or a bank decline unrelated to the customer's intent to keep the subscription. When that happens, the subscription should not silently activate and should not silently cancel either. Instead it enters dunning, the process of retrying the charge on a schedule and notifying the customer.

This is the point in the trial lifecycle competitors rarely address, since it sits at the seam between the trial logic and the payment logic. A customer who genuinely wants to continue but whose card failed for an unrelated reason should get a clear notice and a short grace period to fix it, not an immediate loss of access. Handled well, most of these failures resolve within a few days once the customer updates their card.

Free trial length and best practices

• Common trial lengths are 7, 14, and 30 days.
• Shorter trials suit products where the customer reaches a meaningful result quickly, a checkout page builder or a scheduling tool, where a week is enough to see the product work.
• Longer trials suit products with a slower path to value, where the customer needs to run a full billing period or a season before deciding.
• The trial should be long enough for the customer to reach the moment the product proves its worth, and no longer.

An overlong trial does not increase conversion, it just delays the decision and gives the customer more time to forget why they signed up. Shortening a trial that is already too long is usually a better fix than adding more onboarding emails.

How Checkout Page handles free trials

Checkout Page lets a seller add a trial period to a subscription checkout, with the card collected upfront at signup. The subscription converts automatically once the trial ends, and if that first charge fails, it goes through Stripe's normal retry process rather than cancelling immediately. Customers see their trial status, including the date it converts or ends, in the customer portal, along with the option to update payment details before a card expires.