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I tried sending 0.0001 BTC from my blockchain.info wallet. It deducted 0.0009 BTC from my account, including a 0.0008 BTC is transaction fee.

Is it correct that the transaction fee is 8 times larger than the amount sent?

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    Bitcoin transaction fees are based mainly on the number of bytes in the transaction; they're not a percentage of the amount transacted. If you had sent BTC 1000, you'd still have paid BTC 0.0008. Bitcoin is not really intended for lots of very small transactions. – Nate Eldredge Jan 19 '14 at 19:10
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    @NateEldredge: Then why is "cheap micropayments" explicitly listed as a feature? (See bitcoin.org/en/bitcoin-for-developers) – cHao Jan 20 '14 at 1:51
  • @cHao: "Micro" is a relative term. They qualify it with "as low as a few dollars". The proposed transaction of 0.0001 BTC is only about 0.08 USD at today's prices. – Nate Eldredge Jan 20 '14 at 2:06
  • @NateEldredge: And $.08 falls well within the realm of any meaningful use of the term in the real world. If "as low as a few dollars" is the cutoff for a "micropayment" in BTC, then clearly someone over there doesn't quite get what a micropayment actually is. – cHao Jan 20 '14 at 2:13
  • @cHao: The whole site is on Github; if you have better language in mind, why not submit a pull request? github.com/bitcoin/bitcoin.org/blob/master/_translations/en.yml – Nate Eldredge Jan 20 '14 at 2:19
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That's the recommended fee, the recommended fee is like the minimum amount to get your transaction included in a block ASAP. You should be able to set fees, but for small amounts like that a fee that large is common, remember, miners can only include so many transactions a block every 10 minutes, so they pick the transactions with the largest fee and smallest txn size.

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The details about bitcoin fees are explained here. In short: If you don't pay fees for small amounts, it takes longer until your transactions are included in a block and thus confirmed (to avoid "dust" spam). For blockchain.info you can click on "Send Money" and then "custom" to specify 0 BTC for "Miners Fee". I don't see a problem with this, because they get 25 BTC anyway for mining a block.

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