What a Crypto Onramp Solution Actually Does — and Why $72M Just Bet on the Category

In May 2026, a company called Fun — barely three years old, with a deliberately lean team of fewer than 30 engineers — announced a $72 million Series A co-led by Multicoin Capital and SignalFire. Fun is not a consumer app. Most crypto users have never heard of it. But if you have deposited money into Polymarket, traded on Aave, or settled a transaction through a major DeFi protocol in the last two years, there is a reasonable chance Fun's infrastructure processed it. The company claims to move more than $18 billion in transactions annually across 100-plus countries — quietly, in the background, without a brand most users would recognize.

A crypto onramp solution is the infrastructure that converts fiat currency — dollars, euros, pounds — into crypto or stablecoins and delivers it to a blockchain address. It is the bridge between the traditional banking system and on-chain finance. Without it, every crypto product that requires a new user to start with cash hits an immediate wall. The quality of that bridge — its fees, speed, geographic coverage, and regulatory compliance — determines whether a crypto app can actually acquire and retain users at scale.

This article explains how crypto onramp solutions work at both the consumer and infrastructure level, who the leading providers are in 2026, how to evaluate fee structures that are rarely as simple as advertised, and what the Fun funding round signals about where the category is heading.

How a Crypto Onramp Solution Works

The Basic Flow: Fiat In, Crypto Out

The mechanics of a crypto onramp involve three layers working simultaneously. The first is the payment rail — the system that accepts your credit card, bank transfer, Apple Pay, or local payment method and moves the fiat. The second is the compliance layer — KYC identity verification, AML screening, and jurisdiction-specific regulatory checks that determine whether a transaction is permitted. The third is the settlement layer — the actual conversion of fiat into crypto and delivery to a blockchain wallet address.

Each layer introduces latency, cost, and potential failure points. A consumer onramp that accepts a Visa card in the U.S. and delivers USDC to an Ethereum address in under 30 seconds is executing a complex multi-party process involving a card network, a banking partner, a compliance provider, and a blockchain transaction — all stitched together invisibly.

Consumer Onramps vs. B2B Infrastructure

There are two distinct categories in the crypto onramp solution market, and most comparison articles conflate them. Consumer-facing onramps — MoonPay, Ramp Network, Transak — are what retail users interact with directly: a widget embedded in a wallet or exchange that takes your card details and returns crypto. B2B infrastructure providers — Fun, Stripe's crypto layer, and similar backend-focused companies — power the settlement and compliance rails that other products build on top of.

The $72 million Fun raise is a bet on the B2B infrastructure layer. Fun does not serve consumers directly. It serves the apps — Aave, Polymarket, Lighter — that serve consumers, handling the deposits, withdrawals, and fiat settlement flows that those apps cannot efficiently build themselves. According to Fortune's reporting on the raise, Fun's value proposition is processing fiat-to-crypto and crypto-to-fiat flows at institutional scale with minimal engineering overhead for the client.

The Leading Crypto Onramp Solutions in 2026

MoonPay

MoonPay is the most widely integrated consumer crypto onramp by number of partner apps, supporting purchases via credit card, Apple Pay, PayPal, and bank transfer across 150-plus countries. Its 2026 product expansion includes MoonPay Agents — a non-custodial layer that gives AI agents wallet access and transaction capability, positioning MoonPay as infrastructure for autonomous agent-driven crypto payments. Fees typically run 1–4.5% depending on payment method and region, with card transactions at the higher end.

Ramp Network

Ramp Network holds FINCEN registration in the U.S., FCA registration in the U.K., and VASP status with the Central Bank of Ireland — one of the broader regulatory footprints among dedicated onramp providers. It supports credit and debit cards, bank transfers, Apple Pay, Google Pay, and Brazil's Pix, covering over 150 countries. Ramp's strength is its compliance architecture, which makes it a preferred partner for enterprise and institutional crypto apps that cannot afford regulatory exposure from a less-regulated provider.

Coinbase Onramp

Coinbase Onramp is a developer-facing product — an API and embeddable widget — that lets wallets and dApps offer purchasing for 250-plus tokens across 60-plus fiat currencies directly within their interface. Select apps can access zero-fee USDC onramp and offramp promotions on Base, Coinbase's own L2 network. The Coinbase brand carries trust weight that independent onramp providers lack, which matters for consumer apps targeting users new to crypto.

Transak

Transak operates in 160-plus countries with support for 130-plus cryptocurrencies and payment methods including cards, bank transfers, and local payment options across emerging markets. Its developer SDK is lightweight and widely adopted among DeFi protocols and Web3 gaming apps. For builders deploying apps in Southeast Asia, Latin America, or Africa — markets where local payment method support is critical — Transak's geographic coverage is a meaningful advantage over U.S.-centric providers.

Fun (fun.xyz)

Fun is the category's most notable recent entrant at scale. Founded in 2022 and exiting stealth with its $72 million Series A in May 2026, Fun focuses entirely on the B2B settlement infrastructure layer rather than consumer-facing products. It powers deposits, withdrawals, and settlement flows for Aave, Polymarket, and Lighter, processing over $18 billion in annual transaction volume. The Multicoin Capital and SignalFire co-lead — joined by Infinity Ventures and Tinder cofounder Justin Mateen — reflects institutional conviction that the infrastructure layer of crypto onramping is undercapitalized relative to consumer-facing products. Fun is expanding into Asia-Pacific with a Singapore office as its next growth vector, per Crypto Briefing's coverage.

How to Read Crypto Onramp Fees (They Are Rarely What They Appear)

The most consistent error users make when comparing crypto onramp solutions is looking only at the advertised fee and ignoring the spread — the gap between the mid-market exchange rate and the rate the provider actually offers you. A provider advertising "1% fees" with a 2.5% spread embedded in the exchange rate is actually charging 3.5% in total conversion cost.

According to Bleap Finance's 2026 onramp comparison, the true cost of an onramp transaction has three components: the explicit platform fee (usually 0.5–4.5%), the network or gas fee charged for the blockchain transaction, and the exchange rate spread (usually 0.5–3% depending on the provider and asset). Adding all three gives the real cost. For large transactions, using a bank transfer instead of a card typically reduces total cost by 1.5–2.5 percentage points, since card transactions carry higher processing costs that providers pass through.

Speed is the other variable. Card transactions typically settle in under 5 minutes. Bank transfers range from instant (where local payment networks like Pix or SEPA Instant are available) to 3–5 business days (U.S. standard ACH). For time-sensitive trades, the cost premium of a card transaction is often worth the settlement certainty.

What the Fun Raise Signals About the Category in 2026

The $72 million Series A is notable not just for its size but for its timing and structure. Multicoin Capital is a thesis-driven fund with concentrated bets on crypto infrastructure — their co-lead here alongside SignalFire, a data-science-led venture firm, suggests both crypto-native and mainstream VC conviction in onramp infrastructure as a durable category rather than a transitional one.

The bull case for the category is straightforward: every new crypto user, every DeFi app, every institutional product that accepts fiat deposits requires onramp infrastructure. As the user base expands from roughly 500 million current crypto holders toward broader adoption, onramp volume scales proportionally. The infrastructure provider that has already solved compliance, banking relationships, and settlement reliability across 100-plus countries has a significant moat against new entrants.

The bear case is equally clear: major exchanges (Coinbase, Binance) have native onramp products and deep banking relationships. Stripe — with its existing payment infrastructure, merchant relationships, and the Tempo stablecoin project developed with Paradigm — could displace dedicated onramp providers in the same way it displaced early payment processors. The companies in this category are racing to build switching costs before well-resourced generalists decide the market is worth entering at full commitment.

For traders and DeFi users, the practical takeaway is simple: crypto onramp solutions are maturing faster than most of the on-chain products they serve. Fees are compressing, geographic coverage is expanding, and compliance architecture is becoming a baseline expectation rather than a differentiator. The cost of getting fiat into crypto will continue to fall through 2026 and beyond.

For a guide to the best low-fee entry points into crypto from fiat, see our exchange and onramp comparison on BYDFi CoinTalk. If you are building a Web3 product and evaluating which onramp provider to integrate, our developer tools and infrastructure guide covers the technical and compliance considerations in detail.

Frequently Asked Questions

What is a crypto onramp solution?

A crypto onramp solution is infrastructure that converts fiat currency (USD, EUR, GBP) into cryptocurrency or stablecoins and delivers it to a blockchain wallet — the bridge between traditional banking and on-chain finance. It combines payment rails, KYC/AML compliance, and blockchain settlement into a single flow.

What is the cheapest crypto onramp in 2026?

Total cost varies by payment method: bank transfers typically cost 0.5–2% all-in, while card transactions run 2.5–5% when spread is included. Coinbase Onramp offers zero-fee USDC purchases on Base for qualifying apps, making it the lowest-cost option for stablecoin entry in supported markets.

What did Fun (fun.xyz) raise money for?

Fun raised $72 million in a Series A co-led by Multicoin Capital and SignalFire in May 2026 to expand its B2B crypto payment infrastructure, grow its engineering team, open a Singapore office for Asia-Pacific expansion, and pursue potential acquisitions. Fun powers settlement flows for Aave, Polymarket, and Lighter.

Is MoonPay or Ramp Network better?

MoonPay has broader consumer app integrations and faster checkout UX. Ramp Network has a stronger regulatory compliance footprint (FINCEN, FCA, Irish VASP) making it preferable for enterprise and institutional apps operating in regulated markets. Choice depends on your use case and geographic priority.

Do crypto onramps require KYC?

Yes. All regulated crypto onramp solutions require identity verification under AML and KYC requirements in their licensed jurisdictions. The depth of verification varies — small purchases often require only email and basic ID, while larger transactions trigger enhanced due diligence. Unregulated onramps exist but carry legal and counterparty risk.

What is the difference between a crypto onramp and an exchange?

An exchange (Coinbase, Binance) allows trading between crypto assets and may include a native onramp. A dedicated crypto onramp solution focuses specifically on the fiat-to-crypto conversion step — it is the entry point infrastructure, often embedded within wallets, DeFi apps, or other products rather than operating as a standalone trading venue.

Conclusion

The crypto onramp solution category is not glamorous — it is plumbing. But plumbing is what makes everything else work, and the $72 million bet on Fun's infrastructure layer is the clearest signal yet that institutional capital understands this. Every DeFi protocol, every crypto consumer app, every institutional product that accepts fiat deposits is dependent on onramp infrastructure that most users never see.

For retail users, the immediate priority is understanding the true cost of each onramp — platform fee plus spread plus network fee — before choosing a provider. For builders, the choice of onramp partner is a compliance decision as much as a product one. And for anyone tracking where smart money is moving in crypto infrastructure, the onramp category deserves attention in 2026 that it has rarely received.

Stay current on crypto onramp developments and fee changes through our infrastructure and payments tracker on BYDFi CoinTalk.