I'm trying to send some bitcoins using bitcoin-cli API, but bitcoin core tells me that Fallbackfee is disabled. How can I set a value for fallbackfee? I've tried to specify it like bitcoin-cli sendtoaddress -fallbackfee=someValue but it didn't work. I've also set true for substractfeefromamount and false for replaceable

2 Answers 2


It seem like you tried to run fallbackfee in the terminal ? fallbackfee is a configuration option and should be put inside a bitcoin.conf file, if you dont have this file on your bitcoin directory you can create it: https://en.bitcoin.it/wiki/Running_Bitcoin#Bitcoin.conf_Configuration_File

Then add your fallbackfee=someValue (without the -) inside your bitcoin.conf file on a new line then restart your bitcoin client and try your command again.


Another option that works for me is to call the settxfee with amount before calling sendtoaddress.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.