Stablecoins: Payments Product or Savings Substitute?

Why the line between passive yield and transaction rewards could define how stablecoins compete with banks and payment networks

Stablecoin regulation is beginning to answer a question the market has avoided for years.

What exactly is a stablecoin supposed to be?

Is it digital cash designed for payments and settlement? Is it a new form of transaction account? Or is it an investment-like product that should compete with bank deposits by paying users a return?

The latest debate in the United States places this distinction at the centre of stablecoin policy.

The proposed approach would restrict rewards paid simply for holding stablecoins while preserving incentives linked to genuine payment or transaction activity. Although the legislation is not yet final, the distinction is commercially important.

It could shape how stablecoin platforms acquire customers, how banks respond, where reserve income flows and whether stablecoins develop primarily as payment infrastructure or as substitutes for savings accounts.

Why rewards matter

Stablecoin issuers generally hold liquid reserve assets against the tokens in circulation.

Those assets may include cash, short-term government securities, reverse repurchase agreements and other permitted instruments. When interest rates are positive, the reserves can generate substantial income.

The stablecoin itself, however, usually does not pass that income directly to the holder.

This creates an unusual economic structure. The customer provides the funds. The issuer or its partners invest the corresponding reserves. But most of the resulting return remains within the issuer, platform or distribution network.

Rewards change that relationship.

A platform may share part of the economics with users through balance-based payments, loyalty programmes, cashback, transaction incentives or other benefits. These mechanisms can make a stablecoin more attractive, but they can also blur the line between a payment instrument and an interest-bearing financial product.

That line matters because the two products create different expectations and risks.

Passive yield looks like a deposit

A user who holds stablecoins solely to receive a periodic return is behaving much like a bank depositor or money-market investor.

The token may be recorded on a blockchain, but the economic purpose is familiar: preserve principal, maintain liquidity and earn income on an idle balance.

Banks argue that products performing this function should not receive lighter treatment simply because the balance is represented digitally.

Bank deposits support lending through a fractional-reserve model. Stablecoin reserves are generally expected to remain fully backed by highly liquid assets and cannot be deployed into ordinary business, mortgage or consumer lending in the same way.

If substantial funds migrate from deposits into stablecoins, banks may need to replace those deposits with more expensive wholesale funding or reduce lending.

The size of that effect is disputed. What is not disputed is that passive stablecoin yield would place stablecoins in more direct competition with transaction and savings accounts.

Transaction rewards serve a different purpose

Rewards connected to real payment activity can be viewed differently.

A merchant may offer cashback to encourage a particular payment method. A platform may reduce fees when stablecoins are used for settlement. A wallet may reward users for transfers, purchases or other genuine activity.

These incentives are closer to card rewards, merchant discounts or payment-network rebates than to interest on a savings balance.

The distinction is commercially logical.

A transaction reward encourages usage. Passive yield encourages accumulation.

The first can support payment adoption. The second can transform the stablecoin into a store-of-value product competing for deposits and investment balances.

Regulators will still need to prevent superficial workarounds. A platform should not be able to describe predictable balance-based interest as a transaction reward merely because the user completes an insignificant activity once a month.

The economic substance matters more than the label.

The distribution model is at stake

Stablecoin issuers are not the only companies affected.

Exchanges, wallets, fintech platforms, payment providers and merchant applications all compete to distribute stablecoins. Rewards can be a powerful customer-acquisition tool, particularly when the underlying token is otherwise economically similar across platforms.

Restricting passive yield could change how those companies compete.

Rather than attracting users through the highest return on idle balances, platforms may need to differentiate through:

• lower transaction and conversion costs;
• better merchant acceptance;
• faster cross-border settlement;
• stronger treasury and reporting tools;
• more reliable redemption;
• better compliance and customer protection;
• rewards connected to genuine economic activity.

That would place greater emphasis on stablecoin utility rather than balance accumulation.

For the payment industry, this may be a healthier competitive test.

A stablecoin should not need to behave like an investment product to demonstrate that it is useful for moving money.

Yield can hide the actual use case

High rewards can create adoption without proving genuine payment demand.

Users may hold a stablecoin because the return is attractive, not because they need it for settlement, commerce or treasury movement. Transaction volume may then be driven by balance management, arbitrage or movement between reward programmes rather than real economic activity.

This does not make the product illegitimate.

It does make the adoption metrics harder to interpret.

A stablecoin with a large outstanding supply may have relatively little merchant usage. A smaller token may be deeply embedded in a specific settlement corridor, marketplace or business workflow.

Businesses should therefore distinguish between three different measures:

1. Outstanding balances: how much value users hold;
2. Transaction activity: how frequently the token moves;
3. Economic utility: whether those movements support identifiable commercial activity.

These measures are related, but they are not interchangeable.

Payments need incentives too

Removing passive yield does not mean stablecoin economics should remain entirely with issuers and platforms.

Payment networks have always used incentives.

Cardholders receive points or cashback. Merchants receive promotional pricing. Issuers, acquirers and processors negotiate rebates based on volume. Wallets offer discounts to encourage adoption.

Stablecoins will likely develop their own incentive structures.

The important issue is transparency.

Users should be able to understand why a reward is being paid, who funds it, whether it depends on transaction activity and whether it can be changed or withdrawn.

Businesses should also understand whether incentives distort the real cost of the payment method. A heavily subsidised rail may appear inexpensive during expansion but become less attractive once promotional economics change.

A sustainable payment product should remain useful even after introductory rewards decline.

Stablecoins and bank deposits solve different problems

The market often presents stablecoins and bank deposits as direct substitutes.

In practice, their strengths are different.

Bank deposits integrate with lending, credit facilities, domestic payment systems, deposit protection and established customer-service structures. They remain the primary operating money for most businesses and households.

Stablecoins can offer continuous availability, programmable transfer, faster movement between platforms and more efficient settlement in certain cross-border or digitally native environments.

The strongest use case may therefore be complementary rather than fully substitutive.

A business may keep most operating liquidity in regulated bank accounts while using stablecoins for specific settlement corridors, supplier payments, platform payouts or digital-asset transactions.

In that structure, stablecoins are working capital in motion rather than long-term savings balances.

That is where their payment value becomes easier to defend.

The reserve-income question remains

Even without direct yield to holders, reserve economics will continue to shape the stablecoin market.

Issuers may use reserve income to fund compliance, technology, distribution partnerships, customer support and shareholder returns. They may also share it with platforms that bring users and transaction volume.

This creates potential conflicts.

A distributor may promote the stablecoin offering the most attractive commercial arrangement rather than the one with the best reserve structure or operational fit. Issuers may prioritise balance growth because more outstanding tokens generate more reserve income, even when transaction utility remains limited.

Businesses should therefore examine incentives across the full chain.

Who earns from the reserves? Who pays for distribution? Are customers receiving a better service, or is the structure primarily designed to maximise balances? Could commercial incentives influence the choice of issuer, network or custody provider?

Stablecoin due diligence should include the business model, not only the token.

What businesses should evaluate

For companies, the debate is not simply whether yield should be permitted.

The more practical question is why the stablecoin is being used.

A business considering stablecoin payments or treasury operations should assess:

• whether the purpose is settlement, liquidity management or investment;
• how quickly the token can be redeemed at par;
• which entity holds and manages the reserves;
• whether rewards introduce additional legal or counterparty risk;
• how transactions are approved, monitored and reconciled;
• whether the platform can freeze, delay or restrict transfers;
• how accounting and reporting treat rewards and incentives;
• what happens when commercial terms change.

A payment instrument should be evaluated as part of a workflow.

A yield-bearing balance should be evaluated as a financial exposure.

Confusing the two can create poor risk decisions.

Operational substance matters more than terminology

Stablecoin products will increasingly use careful terminology to distinguish rewards, incentives, rebates and yield.

Compliance teams should look beyond the wording.

A programme that pays a predictable percentage based primarily on the size and duration of a balance is economically deposit-like, regardless of what it is called.

A programme that reduces transaction costs or rewards documented commercial activity is more closely connected to payment usage.

Between those models lies a wide grey area.

Firms will need clear product governance, documented eligibility rules, transparent customer communication and controls against artificial activity designed only to generate rewards.

The regulatory test will likely depend on how the product works in practice.

MetaNord’s view

At MetaNord, we see the stablecoin rewards debate as a useful test of market maturity.

Stablecoins should not need passive yield to prove that they can improve payments.

Their strongest business case lies in areas where traditional infrastructure remains inefficient: cross-border settlement, continuous liquidity movement, platform payouts, digital commerce and provider-led treasury workflows.

Transaction incentives can support adoption, just as they do elsewhere in payments. But the economics should remain transparent and connected to genuine activity.

Passive yield creates a different proposition. It turns the stablecoin into a balance-sheet product and places it in more direct competition with deposits, money-market funds and other cash-management instruments.

Both models may have legitimate uses, but they should not be treated as the same product.

The more clearly the market separates payment utility from savings-style return, the easier it will become for businesses to understand what they are using, why they are using it and which risks they are accepting.