Downpay offers multiple ways to collect or authorize payment for the remaining balance on existing orders.

On this page:

Merchant payment collection options

• Collect payment automatically with Shopify Flow
• Collect payment per order
• Collect payment in bulk
• Collect payment with the Downpay API
• Mark an order as paid when collecting outside Shopify

Customers complete balance payment

Send invoice

Send a payment reminder

Merchant payment authorization workflows

• Authorize payment automatically with Shopify Flow

Merchant payment collection workflows

Collect payment automatically with Shopify Flow integration

Downpay supports Shopify Flow which can be used to automatically collect payment based on specific triggers. Read about the Downpay Shopify Flow triggers and actions and downloadable workflows.

The payment details provided at checkout stay on file indefinitely. Payment does not have to be collected by an order due date. A very long wait could mean that a card could be expired or cancelled, however.

If that does happen, you can send an invoice, but the best approach is to clearly communicate timelines to customers before purchase and while awaiting fulfillment. They can update credit card details themselves if you have set up the Downpay customer order portal.

Collect payment per order

1. Open the order from the Shopify orders page.

2. Locate the Collect payment button inside the payment breakdown box.

3. Click Collect payment and choose the payment method you wish to collect from. Confirm the charge in the next screen.

The order's payment status will now be Paid.

Collect payment in bulk

There are two ways to collect payment in bulk for partially paid orders.

Through the Shopify order list

1. Navigate to the Shopify order index and filter your list of orders to the ones you wish to collect payment for.
2. Select all the orders and click ... and select Manage in Downpay.

3. Reselect the orders and click Collect Payments

Through Downpay dashboard

1. Click More actions beside the purchase option you wish to collect for and select Manage payments.
2. Select the orders you wish to collect balances for and click Collect Payments

Collect payment with the Downpay API

Get started with the Downpay API.

Mark an order as paid when collecting outside Shopify

Remaining balances on orders placed with Downpay can be marked as paid when receiving payment using a manual payment method like a wire transfer. No email notification or receipt is sent when making an order as paid.

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Customers complete balance payment

Customers can pay the remaining balance if you add a Pay Nowbutton to your order email confirmations. Learn how to set this up.

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Send invoice

All non-multicurrency stores can send invoices to customers directly from an order in the Shopify admin.

Review Shopify's send an invoice to a customer guide to use this feature.

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Send a payment reminder

Payment reminders can be sent to customers on or after their payment due date. This reminder will send them an email notification with a Pay Now button that will take them to checkout to complete their balance payment.

To set up Payment Reminders, review the reminders section of our customer communication page.

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Merchant payment authorization workflows

Authorization, also known as pre-authorization or a credit card hold, is an approval from the credit card issuer that confirms that the cardholder has sufficient funds to cover the cost of a transaction.

Authorize payment automatically with Shopify Flow integration

The Downpay Shopify Flow action will authorize the remaining balance of an order. The length of the authorization varies based on the payment provider and Shopify Plan. Learn more about authorization on Shopify.

Some trigger examples to use with this action include: Order created or order fulfilled

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Updated on: 09/03/2026