Quote from: 98problems on August 22, 2015, 11:05:04 AM

Quote from: Snorek on August 21, 2015, 05:06:27 PM

Quote from: hendra147 on August 21, 2015, 04:52:32 PM

Quote from: czechkid on August 21, 2015, 02:40:53 PM

Its the same wallet electrum.. Im sending 0.1, transaction fee is set at 0.000129 but as you can see they increase

why you not make it default fee ? like 10.000satosi ?
I choose 5000satosi for all my transcation at electrum wallet and blockchain

Because transaction fees are based on how much info your transaction is carrying. If inn your wallet the most btc is combined from dust transaction so fees can be overwhelmingly large later if you will be sending btc later. Be wary of that.

well even though the size varies my wallet does not change fees on blockchain.info it is 0.0001 for all my transactions

Quote

Every time you receive a bitcoin payment to your wallet you have a new input to spend at a later date. Think of this like a lump of bitcoin you can use later. When you later want to use these lumps of bitcoin they need space as part of the transaction your wallet creates for you. This is usually 180 bytes per input. A bigger (in terms of byte) transaction will need more fees in order to be confirmed in a reasonable amount of time. Each block offers only a limited amount of space (currently 1MB) and if you need a big chunk of the space a big chunk of your available funds will be used as fee for the miners. Faucets try to counter this by creating payout limits, but they are often set very small. A reasonable fee for a transaction with less than 1000 byte in size is 10,000 Satoshi. If the payout limit is 100,000 Satoshi and you try to spend this input, you will have to spend 10% on fees. If you want an example how bad this can end, I helped someone recover from this a while back, in numbers:
~0.5 BTC from faucets, collected over ~2 years, ~2000 inputs, ~350,000 bytes, ~0.09 BTC in fees

- Credit to Shorena, taken from: https://bitcointalk.org/index.php?topic=1044399.0

I Hope this explanation is enough for you to understand how fees can work.