## Two Ways to Ask for Money

PUSHIN gives you two objects that both end in the same place, a stablecoin transfer on Robinhood Chain with a receipt. The difference is what happens before the payment.

- A **payment link** is a price tag. It can be paid once or many times, by anyone who has the URL.
- An **invoice** is a payment link with a reference, a due date and a single expected payer. It is meant to be paid exactly once.

Under the hood both are entries in the same contract. The invoice simply sets the memo to your invoice number and switches off reuse after the first payment.

## When a Link Is the Right Tool

### Selling the same thing repeatedly

A consulting hour, a template, a monthly retainer at a fixed price: make one reusable link and share it everywhere. Every payment writes its own receipt with the payer's address, so you still know who paid.

### Open amounts

Leave the amount empty and the payer types what they owe. Tips, deposits and "pay what you want" all work this way. The receipt records the amount actually paid.

### Expiry

Links can carry an expiry. After it passes, the contract refuses payment, which is useful for quotes that are only valid for a week.

## When an Invoice Is the Right Tool

### Your accountant wants a paper trail

The invoice number goes into the on-chain memo. When the CSV export lands on your accountant's desk, each receipt matches a document you already issued.

### A specific client, a specific amount, once

Invoices are single-use. Once paid, the contract marks them inactive, so a client cannot accidentally pay twice.

### You need a PDF

The free invoice generator on pushin.cc builds the PDF in your browser, no account required. Put the payment link in the "payment instructions" box and the two travel together.

## Pricing in Your Client's Currency

Both objects can be priced in EUR, GBP, AED and 50+ other currencies. The stablecoin amount is fixed at the live reference rate when you create the link, with no markup, so a EUR 1,000 invoice is worth exactly EUR 1,000 of USDG at creation time. What you see in the dashboard is what lands in your wallet, minus the flat 0.30% fee.

## Quick Decision Table

| You need | Use |
| --- | --- |
| Fixed price, many buyers | Reusable link |
| Amount decided by the payer | Open-amount link |
| One client, one document | Invoice |
| Quote valid until Friday | Link with expiry |
| A PDF for procurement | Invoice generator + link |

Whichever you pick, settlement is one block and the receipt is permanent.