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Billing is handled by Stripe. Summand surfaces the customer portal directly so you can manage payment methods, see invoices, and update billing details without leaving the product.

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Where to find it

Settings → Billing. The page shows your current plan and renewal date, with links to the Stripe customer portal for your payment method, invoices and billing address. For Enterprise customers, billing is invoiced — there’s no card on file. Invoices arrive via email at the contact set on the contract; the in-product page shows your plan and what it includes.

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Plan changes

Education tier ($0/mo equivalent of Pro) is granted to users with a verified .edu email — request it from support@intelligible.ai and we verify and apply the upgrade. Renewed annually via re-verification.

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Invoices

Pro — invoices are generated by Stripe each billing period (monthly or annual) and delivered to the email on file. Available for download as PDF from the Stripe portal at any time. Free has no invoices. Enterprise — invoices follow your contract’s cadence (monthly, quarterly, annual). Custom payment terms (net-30, net-60) are supported.

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Payment methods

Pro: credit or debit card. Add or change it in the Stripe portal. Enterprise: ACH, wire, and check accepted. International wire works but adds a $30 fee per transaction. Set up via your account manager.

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Billing email vs. account email

Your billing email is separate from your sign-in email — useful when invoices need to go to a different address (e.g. accounts payable, not your direct address). Configure in the Stripe portal.

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Tax

Summand’s checkout doesn’t calculate sales tax or VAT automatically. For tax questions, or to have a tax ID added to your invoices, email support@intelligible.ai.

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Promo codes

If you’ve been issued a promo code (signup bonus, conference giveaway, partner discount), enter it on the Stripe checkout page when you upgrade. The discount shows on your invoice.

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Refunds

Refunds are handled case-by-case via support@intelligible.ai. Enterprise contracts are governed by the contract’s termination clause.

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Failed payments

If a payment fails (expired card, insufficient funds, fraud block):
  1. Stripe retries automatically over 21 days.
  2. You receive email notifications at each retry.
  3. After 21 days of failed retries, the account drops to Free until payment is restored.
Datasets and analysis history are preserved during the failed-payment window and the subsequent Free downgrade — no data loss. Restoring payment immediately restores the previous tier’s features.