{"id":3944,"date":"2026-10-12T15:44:07","date_gmt":"2026-10-12T15:44:07","guid":{"rendered":"https:\/\/nownodes.io\/blog\/?p=3944"},"modified":"2026-10-12T15:44:08","modified_gmt":"2026-10-12T15:44:08","slug":"jito-bundles-on-solana-what-they-are-and-how-to-use-them","status":"publish","type":"post","link":"https:\/\/nownodes.io\/blog\/jito-bundles-on-solana-what-they-are-and-how-to-use-them\/","title":{"rendered":"Jito Bundles on Solana: What They Are and How to Use Them"},"content":{"rendered":"\n

A Jito bundle is a group of up to five Solana transactions that execute together, in a fixed order, as all-or-nothing. If any transaction in the bundle fails, none of them land. That guarantee is what makes bundles useful for trading, arbitrage, and any action that only works when several steps happen in exactly the right sequence.<\/p>\n\n\n\n

Bundles are built and submitted through infrastructure from Jito Labs<\/a>, the team behind the most widely used MEV tooling on Solana. This guide explains what bundles do, how tips get them included, and the steps to send one yourself.<\/p>\n\n\n

What Is a Bundle on Solana?<\/h2>\n\n\n
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A bundle is an ordered list of signed transactions that a block producer either includes in full, in sequence, or not at all. No other transactions get inserted between them, and all of them land in the same slot. A single Solana transaction gives you none of that: it can land late, land out of order relative to someone else’s transaction, or fail on its own.<\/p>\n\n\n\n

The atomic guarantee is the whole point. Say you spot a price gap and want to buy a token on one venue and sell it on another in the same instant. As two separate transactions, the second leg might fail after the first one already executed, leaving you holding the position. As a bundle, if the sell leg can’t execute, the buy leg never commits either.<\/p>\n\n\n\n

A Jito bundle currently holds a maximum of five transactions. That cap keeps bundles small enough to schedule quickly, which matters on a chain that produces a new slot roughly every 400 milliseconds.<\/p>\n\n\n

Why Bundles Exist: Ordering and MEV on Solana<\/h2>\n\n\n

Solana has no public mempool in the way Ethereum does. There is no shared waiting room where pending transactions sit before inclusion. Transactions are forwarded straight to the current leader, the validator producing the next block, and the leader decides how to order them.<\/p>\n\n\n\n

That design creates a problem for anything time-sensitive or multi-step. Ordering is not guaranteed for ordinary transactions, and profitable actions can be observed and copied. This is where MEV comes in: maximal extractable value, the profit a block producer or searcher can capture by choosing which transactions to include, exclude, or reorder.<\/p>\n\n\n\n

Here’s why bundles help. They bolt three guarantees onto a set of transactions at once: atomic execution, a fixed internal order, and private submission that never touches a public feed. A searcher can express a complete strategy, for example a liquidation followed by a swap, and know the sequence will either run as written or not at all.<\/p>\n\n\n\n

Private submission became the default for a concrete reason. In 2024, Jito Labs turned off its public mempool after a sharp rise in sandwich attacks, where bots wrapped a victim’s trade to profit from the price move it caused, as reported by The Block<\/a>. Since then, bundles go directly and privately to Jito’s block engine rather than through any public stream.<\/p>\n\n\n

Who Uses Bundles<\/h2>\n\n\n

Bundles are a tool for anyone who needs control over execution rather than a best-effort send. The main users fall into a few groups:<\/p>\n\n\n\n