Our Top 3 Bitcoin Transaction Accelerators

Our business is related to finance, so we make dozens of Bitcoin transactions every day. We use https://bitref.com/fees/ to select the optimal fee rate for every transaction, and in more than 99% of cases this works. But sometimes the Bitcoin network gets congested after a transaction is broadcast, and it gets stuck in the mempool for hours — sometimes even days or weeks. In this article, we'll list the top 3 Bitcoin transaction accelerators we rely on every day.

1. BitAccelerate

https://bitaccelerate.com/

BitAccelerate is one of the most popular and trusted Bitcoin transaction accelerators. It has been operating since 2018 and has helped confirm tens of thousands of transactions. This is our first choice when dealing with a stuck Bitcoin transaction.

BitAccelerate offers both a free and a premium option. The free option rebroadcasts your transaction to more than 20 highly connected Bitcoin nodes, making sure it reaches miners so they can consider including it.

The premium option offers direct transaction prioritization with more than 10 Bitcoin mining pools. When one of these pools mines a block, your transaction will be included even if it carries a low fee — the fee rate no longer matters.

2. BitRef Accelerator

https://bitref.com/accelerator/

BitRef is one of the oldest and most trusted Bitcoin explorers, founded in 2013. It offers many useful Bitcoin statistics and tools, one of which is a Bitcoin Transaction Accelerator. It's completely free and rebroadcasts your transaction to many nodes.

Since 2025, BitRef Accelerator and BitAccelerate have used the same backend — the same unified service can be accessed via both platforms. BitAccelerate is now acting as a subbrand of BitRef, dedicated to Bitcoin transaction acceleration and broadcasting tools.

3. TxBooster

https://txbooster.com/

TxBooster is a relatively new Bitcoin transaction acceleration service that launched in early 2023 but is quickly gaining popularity. It offers a completely free acceleration service, propagating your transaction to 11 well-connected Bitcoin nodes with just one click.

If your Bitcoin transaction hasn't been confirmed, there's nothing to lose by running it through TxBooster. Online reviews of the service are positive, with most users reporting that it helped confirm their transactions. We use it for less important transactions where we don't want to pay for prioritization.

RBF Is Also a Good Option, but It Has Disadvantages

The most common approach to a stuck transaction is RBF (Replace-By-Fee): replacing it with a new transaction carrying a higher fee. This is practically standard now — most wallets support RBF, and you can even replace transactions that weren't originally RBF-enabled (full-RBF).

But this technique has one big disadvantage: the transaction ID (TxID) changes. This can be a real problem, since some systems rely on the TxID they first detect in the mempool and don't expect it to change. Nearly 9% of payment systems can't track transaction replacements — they detect a transaction and simply wait for it to confirm. In this case, the original transaction never confirms, because it's already been replaced.

So the payment fails, and even worse — the money you sent can be lost and never returned. For large payment amounts, this is a serious risk. That's why we prefer to use a transaction acceleration service instead. We use BitAccelerate (https://bitaccelerate.com/) , since it currently has the best prices. The TxID stays the same, and it works reliably.

CPFP (Child Pays For Parent) Option

In some cases, a transaction's effective fee rate can be increased via CPFP (Child Pays For Parent). When sending a Bitcoin transaction, there's often a second output for change, pointing back to your own address. You can spend this output again while it's still unconfirmed — over 60% of wallets support spending unconfirmed outputs.

This lets you set a very high fee on the second (child) transaction, which raises the average fee rate of the whole mempool cluster and helps the first (parent) transaction confirm faster. We use BitAccelerate's free CPFP calculator ( https://bitaccelerate.com/cpfp-calculator/ ) for this. Keep in mind this technique requires some technical knowledge, and the original transaction must have a change output.

Paid vs. Free Acceleration Services

The free acceleration service works for most transactions. But since pricing for the premium service is usually low, we also pay for it on bigger, more important transactions. With the premium service, your transaction is prioritized across more than 10 Bitcoin mining pools — when one of them finds a block, your transaction is included and confirmed.

Validate the Bitcoin Address Before Sending Funds

Another important piece of advice: always use a Bitcoin address validator before sending funds. We use https://bitref.com/address-validator/ . It's happened to us more than once that we were given the wrong address, and sending funds to an incorrect address means they may not be received — and can't be refunded. Even a stray whitespace character before or after the address can break its validity.

Tracking Transaction Status in the Mempool

You can use the BitRef Bitcoin Explorer ( https://bitref.com/ ) to track transaction status. BitRef has one of the best Bitcoin transaction analyzers of all the Bitcoin explorers — it extracts all transaction ancestors and descendants and calculates the effective fee rate of your transaction. This is the rate miners use when deciding whether to include a transaction in the next block.

Conclusion

This is the full toolset we use every day for our Bitcoin-related operations. In conclusion: be careful with RBF, since many systems can't track transaction replacements — it's technically difficult to do. Instead, use a transaction acceleration service like BitAccelerate, or CPFP if your transaction has a change output.