<p>You could enable <code>-fallbackfee</code> as it says in the error message but the easiest or quickest way to resolve this is to set a fee. In this example we are setting a fee of 1 satoshis per byte.</p>
<pre><code>./bitcoin-cli sendtoaddress &quot;bc1q09vm5lfy0j5reeulh4x5752q25uqqvz34hufdl&quot; 0.1 &quot;&quot; &quot;&quot; false true 1 sat/B
</code></pre>
<p>If you do</p>
<pre><code>./bitcoin-cli -regtest help sendtoaddress
</code></pre>
<p>you will see what those arguments after the regtest address represent.</p>
<p>Alternatively if you want to set the fallback fee see this StackExchange <a href="https://bitcoin.stackexchange.com/questions/91533/fallbackfee-option-in-sendtoaddress">question</a>.</p>
<p>This PR <a href="https://github.com/bitcoin/bitcoin/pull/16524" rel="nofollow noreferrer">16524</a> merged in October 2019 disabled <code>-fallbackfee</code> across all chains (mainnet, testnet, regtest) by default.</p>

CC BY-SA 4.0
2020-10-05T12:42:48.897Z
2020-10-05T13:16:14.667Z
2020-10-05T13:16:14.667Z
Michael Folkson
<p>When I try to send regtest Bitcoin using bitcoin-cli:</p>
<pre><code>./bitcoin-cli -regtest sendtoaddress bc1q09vm5lfy0j5reeulh4x5752q25uqqvz34hufdl 0.1
</code></pre>
<p>I get the error message:</p>
<pre><code>error code: -6
error message:
Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or enable -fallbackfee.
</code></pre>
<p>How do I resolve this so I can send regtest Bitcoin?</p>

CC BY-SA 4.0
2020-10-05T15:01:04.603Z
I think it was already addressed in https://bitcoin.stackexchange.com/questions/97174/using-bitcoin-client-and-bitcoind-for-regtest-error-regarding-fallback-fees/97223#97223 ?
Antoine Poinsot
CC BY-SA 4.0
2020-10-05T15:11:17.743Z
Thanks, darosior. Voted to close this one.
Michael Folkson
<transaction-fees><bitcoin-core-development><regtest><signet>
Sending regtest Bitcoin fails with an error message. How do I resolve this error?
Michael Folkson
# Sending regtest Bitcoin fails with an error message. How do I resolve this error?

(Asked by: username_0 on 2020-10-05)

When I try to send regtest Bitcoin using bitcoin-cli:

```
./bitcoin-cli -regtest sendtoaddress bc1q09vm5lfy0j5reeulh4x5752q25uqqvz34hufdl 0.1

```

I get the error message:

```
error code: -6
error message:
Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or enable -fallbackfee.

```

How do I resolve this so I can send regtest Bitcoin?

**Tags:** transaction-fees, bitcoin-core-development, regtest, signet

> **Comments:**
> **username_1**: I think it was already addressed in https://bitcoin.stackexchange.com/questions/97174/using-bitcoin-client-and-bitcoind-for-regtest-error-regarding-fallback-fees/97223#97223 ?  
> **username_0**: Thanks, darosior. Voted to close this one.  

---

## 1 answers

### Answer by username_0 on 2020-10-05. Score: 1

You could enable `-fallbackfee` as it says in the error message but the easiest or quickest way to resolve this is to set a fee. In this example we are setting a fee of 1 satoshis per byte.

```
./bitcoin-cli sendtoaddress "bc1q09vm5lfy0j5reeulh4x5752q25uqqvz34hufdl" 0.1 "" "" false true 1 sat/B

```

If you do

```
./bitcoin-cli -regtest help sendtoaddress

```

you will see what those arguments after the regtest address represent.

Alternatively if you want to set the fallback fee see this StackExchange [question](https://bitcoin.stackexchange.com/questions/91533/fallbackfee-option-in-sendtoaddress).

This PR [16524](https://github.com/bitcoin/bitcoin/pull/16524) merged in October 2019 disabled `-fallbackfee` across all chains (mainnet, testnet, regtest) by default.


---

