<p>Regarding your first question, a new <code>fee_rate</code> argument has been added to the <code>sendtoaddress</code> command in the upcoming release (<code>v0.21.0</code>, currently at the third release candidate) of Bitcoin-Core.<br />
In addition, a new <code>send</code> RPC was integrated which allows you to set a specific feerate too.</p>
<p>Regarding your second question (meaning of <code>CONSERVATIVE</code> and <code>ECONOMICAL</code>), see <a href="https://bitcoin.stackexchange.com/questions/96489/how-does-bitcoin-core-estimate-the-transaction-fee/96491#96491">How does Bitcoin Core estimate the transaction fee?</a> .</p>

CC BY-SA 4.0
2020-12-17T17:06:49.117Z
2020-12-17T17:06:49.117Z
Antoine Poinsot
<p>Currently when I broadcast transactions, I seem to be unable to do so with a fee below ~10^-4 bitcoin (~$2 at current exchange rate). Any 'conftarget' value between approximately 100 - 1000 yields the same ~10^-4 estimate. I would prefer to send some less urgent transactions with lower fees but it's not clear how to do so if when I set conftarget=1008 (which I believe is the bitcoin core max) for the transaction, I cannot access fees lower than described. Is this expected behaviour for Bitcoin Core?</p>
<p>On a related note, it is not completely clear to me how the <code>estimatesmartfee</code> 'estimate_mode' parameter functions. From the help, I can see that the options are 'ECONOMICAL' and 'CONSERVATIVE', which seem quite self-explanatory on a high level (former estimates lower fees than latter for same conftarget), but in practice - how does the estimation differ? So far I have used the default 'UNSET', which I understand defaults to 'CONSERVATIVE' - would this affect the value of the apparent minimum possible network fee described above?</p>

CC BY-SA 4.0
2020-12-17T17:01:24.330Z
Your post contains two questions, for the latter see https://bitcoin.stackexchange.com/questions/96489/how-does-bitcoin-core-estimate-the-transaction-fee/96491#96491 :)
Antoine Poinsot
<bitcoin-core><transaction-fees><bitcoin-cli>
Set bitcoin fee lower than minimum estimatesmartfee value
qmux
# Set bitcoin fee lower than minimum estimatesmartfee value

(Asked by: username_0 on 2020-12-17)

Currently when I broadcast transactions, I seem to be unable to do so with a fee below ~10^-4 bitcoin (~$2 at current exchange rate). Any 'conftarget' value between approximately 100 - 1000 yields the same ~10^-4 estimate. I would prefer to send some less urgent transactions with lower fees but it's not clear how to do so if when I set conftarget=1008 (which I believe is the bitcoin core max) for the transaction, I cannot access fees lower than described. Is this expected behaviour for Bitcoin Core?

On a related note, it is not completely clear to me how the `estimatesmartfee` 'estimate\_mode' parameter functions. From the help, I can see that the options are 'ECONOMICAL' and 'CONSERVATIVE', which seem quite self-explanatory on a high level (former estimates lower fees than latter for same conftarget), but in practice - how does the estimation differ? So far I have used the default 'UNSET', which I understand defaults to 'CONSERVATIVE' - would this affect the value of the apparent minimum possible network fee described above?

**Tags:** bitcoin-core, transaction-fees, bitcoin-cli

> **Comments:**
> **username_1**: Your post contains two questions, for the latter see https://bitcoin.stackexchange.com/questions/96489/how-does-bitcoin-core-estimate-the-transaction-fee/96491#96491 :)  

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## 1 answers

### Answer by username_1 on 2020-12-17. Score: 1 | Accepted answer

Regarding your first question, a new `fee_rate` argument has been added to the `sendtoaddress` command in the upcoming release (`v0.21.0`, currently at the third release candidate) of Bitcoin-Core.  
In addition, a new `send` RPC was integrated which allows you to set a specific feerate too.

Regarding your second question (meaning of `CONSERVATIVE` and `ECONOMICAL`), see [How does Bitcoin Core estimate the transaction fee?](https://bitcoin.stackexchange.com/questions/96489/how-does-bitcoin-core-estimate-the-transaction-fee/96491#96491) .


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