---
title: "Prefunding in payment operations"
description: "Learn what prefunding is, why payment providers hold funds ahead of payouts, how to size a buffer and its capital cost, and where stablecoin settlement helps."
path: "/learn/prefunding/"
label: "Payments"
image: "/cards/learn-prefunding.webp"
---

_Prefunding is placing money in an account before payments or settlement obligations fall due, so payouts can go out while replenishment is still on its way. This guide covers why providers prefund, how to size a buffer and estimate its capital cost, and how faster settlement can reduce the balance. See how [Tempo supports cross-border payments](/solutions/cross-border-payments/) for the stablecoin legs of a payout flow._

A payout provider in the United States pays freelancers in Mexico. Its customers fund payouts by wire on Thursday afternoon, but recipients expect pesos within minutes of a payout request, including on weekends. To deliver on time, the provider keeps pesos in a local account with its receiving partner and refills that account once its own funds arrive and convert.

That local balance is prefunding. It lets payouts go out on the recipient's schedule instead of the funding schedule, and it ties up capital in every corridor the provider serves.

## What is prefunding?

Prefunding is the practice of making funds available in an account before the payments or settlement obligations that will draw on it fall due.

The account may sit with a local bank, a payout partner, a card network, a ramp provider or a correspondent bank. The provider pays obligations from that balance and replenishes it later through its regular funding route. The [nostro and vostro accounts](/learn/nostro-vostro-accounts/) guide explains one common arrangement banks use to hold these balances in other currencies.

### Prefunding vs. post-funding

Prefunding and post-funding differ in who carries the timing gap between payment and settlement.

| Model        | How it works                                             | Who carries the gap                             |
| ------------ | -------------------------------------------------------- | ----------------------------------------------- |
| Prefunding   | Provider deposits funds before payouts draw on them      | The paying provider ties up its own capital     |
| Post-funding | Partner pays first and settles with the provider later   | The partner extends credit and prices that risk |
| Hybrid       | A smaller prefunded balance plus a credit line for peaks | Both, with limits set in the contract           |

Partners that post-fund usually charge for it, cap the exposure, or require collateral. That cost belongs in any comparison with a prefunded balance.

## Why payment providers prefund

Timing mismatches create the need. Customer funds arrive on one schedule, often tied to banking days and wire cutoffs, while recipients expect payouts on another. [Fedwire](https://www.frbservices.org/financial-services/fedwire-funds-service/), for example, operates on business days only, so funds sent after Friday's cutoff may not land until Monday. A provider that promises weekend delivery has to fund that weekend in advance.

Several other factors push balances up:

- **Uncertain demand.** Payout volume can spike around payroll dates, holidays or marketplace promotions.
- **Replenishment risk.** A wire can be delayed, returned or held for compliance review.
- **Local holidays.** A corridor can be closed on one side while the other side keeps paying out.
- **Partner terms.** Receiving partners often set minimum balances before they will release payouts.

In cross-border operations, separate currencies and accounts fragment liquidity. The [BIS report on cross-border liquidity bridges](https://www.bis.org/publications/liquidity-bridges-across-central-banks-cross-border-payments) examines this broader challenge. A balance available in one place may not be available where the next obligation must settle, which is why providers serving many corridors hold many separate buffers. The [liquidity management](/learn/liquidity-management/) guide covers how treasury teams track these positions together.

## How to size a prefunding buffer

Start with the period between reliable replenishments. Estimate the net outflows expected during that period, then add a buffer for forecast error, delayed funding and exceptional demand. Treat contractual minimum balances separately so they do not disappear into an average.

For example, a provider expecting $100,000 of net payouts before its next replenishment might reserve another $40,000 for uncertainty. That produces an illustrative $140,000 funding target. It is a planning example, not a recommended reserve or a claim about any provider's requirements.

A simple sizing process follows these steps:

1. Map each funding pool: the currency, the account holder and the partner that pays from it.
2. Measure the longest normal gap between replenishments, including weekends and local holidays.
3. Forecast expected and peak net outflows over that gap from recent payout history.
4. Add a buffer for a delayed or failed replenishment, sized to how often that has happened.
5. Add contractual minimums and any holds on top of the operating balance.
6. Review the target as volumes, partners and funding routes change.

## Prefunding metrics to track

A handful of metrics shows whether a buffer is the right size. Track them per funding pool, not only in aggregate, because a surplus in one currency does not cover a shortfall in another.

| Metric                         | What it shows                                            |
| ------------------------------ | -------------------------------------------------------- |
| Expected and peak net outflows | How much the pool must cover before replenishment        |
| Available balance              | Funds left after pending payouts and holds               |
| Replenishment time             | Hours or days from funding instruction to usable balance |
| Buffer utilization             | How much of the safety margin peak days actually use     |
| Shortfall events               | Payouts delayed because the pool ran low                 |
| Required minimums and credit   | Contractual floors and any partner credit available      |
| Emergency rebalancing cost     | FX spread and fees paid on urgent top-ups                |

Frequent shortfalls suggest the buffer is too small or replenishment too slow. A pool that never uses most of its buffer is tying up capital it does not need.

## Estimating the capital cost of prefunding

An illustrative annual opportunity cost is the average funded balance multiplied by an assumed annual funding rate. A $1 million average balance at an assumed 5% annual rate represents $50,000 per year before FX effects, account charges or operational costs.

Use the average balance held over time, not total annual payment volume. A provider that moves $50 million a year through a corridor may only hold $1 million there on an average day. For a fuller comparison, add the cost of replenishment, conversion, failed payouts and operating the alternative. Faster settlement is useful when it lowers this complete cost while keeping service levels.

## Common prefunding challenges

Prefunding problems tend to show up in the same places:

- **Trapped capital across corridors.** Each new currency or partner adds another balance that cannot easily be moved to where demand is.
- **Forecast error.** Thin history in a new corridor makes buffers either too large or too small.
- **Slow or failed top-ups.** Bank cutoffs, holidays and compliance holds stretch the replenishment window, as the [settlement risk](/learn/settlement-risk/) guide explains.
- **Reconciliation.** Matching each top-up and payout to the right customer and ledger entry gets harder as pools multiply.

## How stablecoin settlement affects prefunding

Stablecoins can move between counterparties outside banking hours, so a funding leg that once waited for a wire can happen on a weekend. If a receiving partner accepts stablecoins and can use them promptly, a shorter replenishment window can support a smaller prefunded balance.

Treat this as a hypothesis to test for each flow. A local off-ramp may still need fiat liquidity, process payouts only during supported hours, or follow local rules on currency conversion. A wallet transfer does not prove that the final bank payment arrived. Moving a buffer from a bank account into stablecoins also changes its custody and issuer exposure. The [stablecoin on- and off-ramps](/learn/stablecoin-on-off-ramps/) guide covers these conversion steps.

Compare a pilot against the existing flow using average committed capital, replenishment time, failed-payment rate and time to recipient receipt. The [cross-border payments guide](/learn/cross-border-payments/) explains the prerequisites for a corridor.

## Where Tempo fits

On Tempo, stablecoin transfers settle onchain in under a second, 24/7, which can shorten the funding leg of a prefunded flow.

- **Onchain settlement in under a second.** Stablecoin top-ups to a partner that accepts them settle onchain without waiting for bank hours.
- **Fees in stablecoins.** [Transaction fees](https://docs.tempo.xyz/protocol/fees) can be paid in supported stablecoins, so teams do not manage a separate gas token.
- **Transfer memos.** [TIP-20 transfer memos](https://docs.tempo.xyz/guide/payments/transfer-memos) carry payment references that help match top-ups to ledger entries.
- **Tempo Routes.** [Routes](/routes/) connect supported stablecoin deposits and transfers; the [network and asset directory](https://docs.tempo.xyz/docs/routes/networks) lists current coverage.

Conversion to local currency, bank payouts, partner minimums and the size of each buffer remain the provider's and its partners' responsibility. [Talk with Tempo](/contact/) about your funding flows.

## FAQ

### What is prefunding in payments?

Prefunding is placing money in an account before payments or settlement obligations fall due. Payout providers use it so recipients can be paid from funds already on hand while replenishment arrives later.

### Why can a fast payout still require prefunding?

The receiving provider may pay from funds already on hand and replenish them later. Fast recipient delivery does not by itself show that the underlying funding flow is equally fast.

### How much should a provider prefund?

Start with expected net outflows between reliable replenishments, then add a buffer for forecast error, delayed funding and peak demand. Hold contractual minimum balances on top of that amount.

### How do you calculate the cost of prefunding?

Multiply the average funded balance by an annual funding rate, then add conversion, replenishment, account and failed-payout costs. Use the average balance held over time, not total annual payment volume.

### Do stablecoins remove all prefunding?

No. They can shorten an onchain funding leg, but conversion, bank payouts, contractual balances and operational buffers may still require capital ahead of demand.

### How should a team measure reduced prefunding?

Compare average committed capital and service performance for the same payment flow before and after the change. Include funding, conversion, custody and operational costs.