Fomo slippage settings: where they are and what they do

Yes, fomo now lets you set slippage. It is on Auto by default, and you can change it from the Slippage row on the buy or sell screen in the app, from the Quick Trades settings, or from the Swap settings gear on fomo web. A custom value is the most price movement you will accept: if the price moves further, the trade fails rather than filling at a worse price. Here is where each control is, what it covers and what it does not.

Does fomo let you set slippage?

It does. Until recently fomo had only published a general explainer on slippage, and several guides, including some of ours, said the app’s own setting was not documented. fomo’s help center now has a dedicated article on slippage settings, and it answers the question directly: the setting is on Auto unless you change it, and you can switch it to a custom value on any token trade paid from your cash balance.

Slippage itself is simple. It is the difference between the price you were quoted and the price your trade actually fills at. On a token with deep liquidity the gap is usually small. On a thin memecoin, which is much of what people buy in the fomo trading app, the gap can be large, and that is where the setting matters.

Two things fomo is clear about: it does not recommend a value, and a higher ceiling on a thinly traded token can mean your trade fills further from the price you saw.

Where is the slippage setting in the fomo app and on web?

There are three places to change it, and each one is separate:

The detail most people miss: fomo stores the setting on the device or browser where you set it. A custom value on your iPhone does not follow you to a desktop browser, and the reverse is also true. If you trade on both, set it in both, or check it before a trade on a thin token. Our guide to trading on fomo web covers what else differs between desktop and phone.

The Slippage row also does not appear everywhere money moves. fomo says it is shown only for trades paid with your cash balance, not for withdrawals and not for Apple Pay purchases. If you buy a token directly with Apple Pay, the steps in our Apple Pay guide apply, and there is no slippage control in that flow.

What do Auto and a custom slippage value do?

• Auto lets the app choose a tolerance for each trade. You do not pick a number, and fomo does not publish how Auto decides.
• Custom is a ceiling you set yourself. fomo describes it as the most price movement you will accept. If the price moves further than that between the quote and the fill, the trade fails instead of filling at the worse price.

That gives you a real trade-off rather than a right answer:

• A tight custom value protects you from a bad fill, but on a fast-moving or thin token more of your trades may fail, and you may have to retry at a higher price.
• A loose custom value makes trades more likely to go through, but fomo warns that on thinly traded tokens it can mean a fill further from the price you saw.
• Auto hands the choice to the app, which is simpler but means you are trusting a method fomo has not described.

fomo’s slippage article does not list preset values or a range, and it does not mention perpetual futures. For perps, fomo’s separate stop loss and take profit article says triggered exits use a built-in 10% slippage tolerance, but perps are not available to US persons, so for a US reader the token-trade setting is the one that counts. The rest of the order tools are compared in our page on what you can and cannot set on fomo.

Why did my fomo trade fill at a different price than the quote?

fomo has a help center article on exactly this, and its explanation is about how pools work rather than about the app:

• The quote is a snapshot. It is the pool’s price when the quote is issued. Your trade fills at the pool’s price when it lands, and other trades can execute in between.
• Pools move like a see-saw. Each buy shifts the price, so later buyers get fewer tokens for the same amount. On a pool with little liquidity, your own order can move the price noticeably.
• Someone else paid less. A trader who bought just before you may have paid a lower price because the pool was still at its earlier level, not because their order was smaller.

fomo’s general slippage explainer adds two more causes: slow networks in fast markets, and bots that detect a pending transaction and trade ahead of it.

What fomo suggests you do about a surprising fill:

1. Read the price impact estimate before you confirm. A high figure means the pool is already tilted against the size you are trading.
2. Adjust your slippage setting if you would rather a trade fail than fill far from the quote.
3. Look up the transaction on a block explorer to see what the pool did at the time of your fill. fomo’s help center lists explorers for each chain, such as solscan.io for Solana and basescan.org for Base.
4. Contact support from inside the app if a fill came in below the quote with no visible fee. Include the token and the approximate time of the trade. fomo’s article warns that some pools hide fees from routing systems and then take a large cut.

A bad fill also changes your results. fomo calculates realized PnL from what you actually received, not from the quote, which our fomo PnL guide explains in more detail.

How do Quick Trades handle slippage?

Quick Trades is fomo’s one-tap trading panel in the iOS and Android apps. You open it from Quick trades next to the Buy and Sell buttons on a token page, or from an open position. A buy chip spends a set amount from your cash balance, and a sell chip sells a percentage of your position, with the 100% chip selling everything.

The important difference is speed. fomo says tapping a chip sends the order immediately, with no slide-to-confirm step. That makes the slippage setting on the Quick Trades panel more important than on the normal screen, because there is no extra moment to look at the price again. From the panel’s settings icon you can set your buy amounts, sell percentages and slippage, or reset to defaults.

Some checks still appear even in one-tap mode:

• Buying a token with a severe warning label you have not traded before still requires typing “I understand the risks”.
• A review step appears when price impact is high, or, on EVM networks, when the network fee is high.

Quick trades are final on the blockchain, like every fomo trade. A warning label is also worth reading before you set up chips for a token; our page on fomo token verification explains how labels and the verified checkmark differ.

How should a beginner think about slippage on memecoins?

This is not trading advice, and fomo itself does not recommend a value in the app. Its general explainer on slippage, published in February 2026, gives typical tolerances that trading interfaces use by type of token:

• About 0.1% to 0.5% for large-cap tokens with deep liquidity.
• About 1% to 3% for mid-cap tokens with moderate liquidity.
• 5% to 10% or more, which fomo says is sometimes necessary for brand-new or low-liquidity memecoins, “but increases your cost significantly”.

Read that last line twice. A wide tolerance on a new memecoin is not a setting that makes a trade cheaper; it is permission for the trade to cost more. Two habits follow from fomo’s published rules:

• Size orders for thin pools. Your own order moves the price on a small pool, so a smaller order usually means less price impact. On Solana, though, orders between 5 and 47.50 USDC pay a 2% fee, so very small orders have their own cost; the bands are on the fomo fees page.
• Think about the exit at entry. Selling a thin token faces the same slippage, and fomo’s minimum sell is 2 USDC on most networks and 5 USDC on Ethereum. If a token has no route to sell at all, slippage is not the problem; see why a token will not sell on fomo.

What does the slippage setting not cover?

Knowing the limits helps you avoid blaming the wrong thing for a disappointing trade:

• Fees. Slippage is not the fomo fee. The standard fee is 0.50% per trade, select major tokens cost 0.05%, and on every chain except Solana you pay the network fee on top.
• Apple Pay purchases and withdrawals. fomo says the Slippage row does not appear on them.
• Price limits. A custom slippage value caps how far a trade can drift from its quote, but it is not a limit order. fomo does not document limit orders for spot trades, so a trade still happens when you confirm it, at the price available then.
• Reversals. fomo says a confirmed blockchain transaction is permanent and cannot be reversed, whatever slippage you set.

If you have not opened an account yet, the one cost you can lock in before your first trade is the fee. A referral link opened before you sign up takes the standard fee from 0.50% to 0.45%, and fomo only attaches it at sign-up. The order of steps is in our sign-up guide, and the full buying flow is in your first trade on fomo.

Fomo slippage questions