<p>I'd like to do RBF testing on testnet. I'd like to simulate a transaction with too-low fees, aka &quot;stuck&quot; transaction, and then RBF it in various ways.</p>
<p>Problem is, all testnet transactions are added to the next block due to mostly-empty mempool and 1 sat/B fee rate.</p>
<p>Is there a clever way to create a transaction that sits in the testnet mempool, which can be later mined after RBF?</p>
<p>Didn't the developers of RBF test their code on testnet?</p>

<testnet><replace-by-fee>
How to test RBF on Testnet?
Donn Lee
# How to test RBF on Testnet?

(Asked by: username_0 on 2021-04-08)

I'd like to do RBF testing on testnet. I'd like to simulate a transaction with too-low fees, aka "stuck" transaction, and then RBF it in various ways.

Problem is, all testnet transactions are added to the next block due to mostly-empty mempool and 1 sat/B fee rate.

Is there a clever way to create a transaction that sits in the testnet mempool, which can be later mined after RBF?

Didn't the developers of RBF test their code on testnet?

**Tags:** testnet, replace-by-fee


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