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What Is Pump.fun? How the Platform Works and What to Know About Its Fees

Pump.fun lets users launch and trade Solana coins on bonding curves, with completed curves able to migrate to PumpSwap. Learn what graduation means, how fees work, and why the May 2026 schedule cannot confirm March fees.
From TheFinanceBase Team4 min to read
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Pump.fun is a Solana platform for creating and trading tokens, called SPL coins in its program documentation. A newly created coin can trade immediately against a bonding curve, without the creator first supplying conventional liquidity. If the curve completes, liquidity can move to PumpSwap. That transition—often called “graduation”—is a change in trading venue, not evidence that a coin is safe, valuable, or likely to keep rising.

The title’s March 2026 date matters for fees: Pump.fun’s fee page reviewed here was last updated May 20, 2026. Its figures are a later published schedule, not a verified record of what users paid in March.

What is Pump.fun?

Pump.fun combines a token-launch interface with on-chain Solana programs for issuing and trading coins. Its program documentation describes coins that are tradeable on a bonding curve as soon as they are created, without requiring initial liquidity to be seeded in the usual way. The curve uses virtual token and SOL reserves to calculate trades. Pump.fun’s program documentation describes the lifecycle and relevant instructions.

This mechanism makes launching and trading possible, but does not itself establish that a coin has a useful purpose, trustworthy operators, or durable demand. A completed curve and a move to another pool are protocol events, not quality checks.

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How does Pump.fun work?

1. A coin begins trading on a bonding curve

When a coin is created, buyers and sellers trade against the curve rather than a conventional liquidity pool initially funded by the creator. The program tracks synthetic, or virtual, reserves alongside real reserves. On a buy, virtual SOL and real SOL reserves increase while token reserves decrease; on a sell, those reserve movements reverse. The reserve relationship determines the curve price, so a trade’s execution price can differ from the price a user saw before submitting it. The program documentation explains the reserve mechanics.

2. The curve can complete

The documented completion condition is that the real token reserves reach zero. That is a specific contract state; it does not mean the coin has been independently reviewed, that buyers have made a profit, or that future demand is assured.

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3. Liquidity may migrate to PumpSwap

After completion, the curve can migrate to PumpSwap, a Solana automated market maker (AMM). Pump.fun’s documentation says the old withdraw instruction is disabled and any user can call the permissionless migrate instruction for a completed curve. During migration, the PumpSwap liquidity-provider (LP) tokens received are burned, according to the program description. The program documentation covers these instructions and the migration.

“Graduation” is commonly used for this move from the bonding curve to PumpSwap. It describes a liquidity transition; it is not a certification, endorsement, or promise about price performance.

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What does Pump.fun charge?

The latest fee schedule reviewed for this article is on Pump.fun’s fee page, which says it was last updated May 20, 2026. These are therefore later published figures, not verified March 2026 fees. The page says creator fees apply to coins on the curve or PumpSwap from May 13, 2025, and separates creator, protocol, and LP fees. Fees are charged in the pool’s quote asset. Check Pump.fun’s fee page for its published schedule.

Lifecycle stage or action Published charge What the figure means
Creating a coin 0 SOL / 0 USDC Fee page updated May 20, 2026; not established as the March 2026 charge.
Bonding-curve trade for SOL- or USDC-paired coin 0.300% creator + 0.95% protocol + 0% LP = 1.25% total Fee page updated May 20, 2026. The total comprises the listed creator, protocol, and LP components.
Graduation from Pump.fun to PumpSwap 0.015 SOL Fee page updated May 20, 2026; not established as the March 2026 charge.
Graduated canonical PumpSwap pool trade Market-cap-dependent fee tiers The fee page publishes tiers; check that page for the applicable tier and current schedule rather than assuming one percentage applies to every pool.

The percentage alone is not necessarily the full transaction cost. Pump.fun’s terms say displayed fee estimates can differ from the charge applied because of slippage, network conditions, or rounding. A wallet or third-party interface may add separate fees. The terms also say creator-fee collection and payout depend on network conditions, smart contracts, and third-party infrastructure, and are not guaranteed. Pump.fun’s terms set out these qualifications.

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What is Mayhem Mode?

Pump.fun describes Mayhem Mode as experimental. Its documentation says an autonomous agent may trade eligible coins during their first 24 hours, but is not guaranteed to trade every coin for which the mode is enabled. The page warns that additional supply sold by the agent could leave some holders unable to sell into the bonding curve. It also characterizes the feature as an early beta requiring production testing. Read Pump.fun’s Mayhem Mode documentation.

The same page said that, as of November 12, 2025, users could not toggle the mode in the web or mobile app. That is a dated interface statement, not confirmation of the current controls; the page does not give an original publication date.

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  • All your digital assets in one place. You can manage thousands of crypto including Bitcoin, Ethereum, Solana, Tether and more.
  • Connectivity: USB-C cable connection only. No Bluetooth.Compatible with the Ledger Wallet crypto app, both desktop (Windows, macOS, Linux) and mobile (Android only). Not compatible with iOS.
  • Protect your digital assets with the industry's best security: keep your private keys offline in your private signer, battle-tested by the Donjon's white hat hackers, CC EAL 6+ certified Secure Element, constantly updated Ledger OS.
  • Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
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Who can use Pump.fun, and what should users keep in mind?

Pump.fun’s terms require individual users to be at least 18 and the age of majority where they live. They also state that some features are unavailable in certain jurisdictions or to some categories of users. The terms prohibit market manipulation and false or misleading messages about assets. These are platform rules, not a substitute for local legal advice. See the platform terms.

  • Trading a coin on a bonding curve or AMM exposes a user to price movement and execution uncertainty; a protocol transition does not remove those risks.
  • Use the applicable fee schedule for the coin’s stage and pool, and account for possible network, wallet, interface, and slippage costs.
  • A wallet and on-chain transaction are part of interacting with these services, but the cited documentation does not establish that a particular wallet product is required or endorsed.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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