PAY ANY AMOUNT

Collect deposits and payments without fixed price products

Quantum includes a pay any amount flow so customers can enter their own payment value online. It is ideal for deposits, invoice payments, balances, and custom orders. This saves time and avoids creating extra products just to take payments.

Read the setup guide Buy Quantum

Works for direct to customer shoppers and for wholesale customers, depending on how you choose to use it.

What it is used for

A flexible payment tool for real business workflows.

Deposits Invoice payments Balance payments Pre orders Custom quotes Wholesale top ups

Deposits for custom work

Send a customer to a payment page, ask them to enter the agreed deposit amount, and checkout. No manual invoices required.

Pay an invoice online

Customers can pay an outstanding invoice amount without you creating a special product for that exact price.

Balances and final payments

Perfect for the second payment after a deposit, or any final balance that changes from customer to customer.

How it works

Simple for customers, simple for your team.

1

Create a pay any amount page

Add the pay any amount section to a page, then set your wording and guidance.
2

Share the link with the customer

Send the link by email or text. Tell them the amount to enter, or let them choose their own amount.
3

Customer pays through checkout

Payment is processed through your Shopify checkout, so everything stays in one place.
4

Track and fulfil like normal

The payment is recorded in Shopify so your team can track it without juggling separate invoicing tools.

The big win

Instead of creating lots of fixed price products just to collect different payment amounts, Quantum lets customers enter the right amount at the time of payment.

Why this is better than fixed price payment products

Fixed price products force you into awkward workarounds when every customer needs a different amount.

The old way

Create multiple products at different prices
Edit products every time a quote changes
Send manual invoices and chase payments
Extra admin work for your staff

The Quantum way

One payment page that fits many use cases
Customers enter the amount you request
Payments recorded in Shopify
Fewer steps and fewer mistakes

FAQs

Clear answers for common setup questions.

Can I set a minimum amount

Yes. You can guide customers with recommended amounts and you can configure minimums depending on your setup. Check the documentation for the exact settings in your build.

Can customers pay invoice balances with this

Yes. You can send a payment link and tell the customer the amount to enter. It is ideal for balances and invoice payments.

Does this replace my product catalogue

No. This is for payments that do not fit standard product pricing, such as deposits and invoices. Your normal products still work as usual.

Is it safe for customers

Customers pay through your Shopify checkout using your normal payment providers. You control the wording and guidance on the payment page.