what is the minimum transaction amount ?

[shark255]

Why i can not send 1 satoshi ? And my wallet says "Transaction amount too small"

[nastybit]

It looks lime somebody took the time and registered a domain just to answer your questions.
http://bitcoinfees.com

[edutBTC]

as your wallet is saying you need a larger amount of satoshi.

[RoxxR]

It looks lime somebody took the time and registered a domain just to answer your questions.
http://bitcoinfees.com

This is answering a lot of questions but not the OP's.

OP, here's your answer: Minimal output that is accepted is 5460 satoshis. (to prevent network spam)
This might change at some point in the future.

Google "5460 satoshis" for more info.

[BigMac]

It looks lime somebody took the time and registered a domain just to answer your questions.
http://bitcoinfees.com

This is answering a lot of questions but not the OP's.

OP, here's your answer: Minimal output that is accepted is 5460 satoshis. (to prevent network spam)
This might change at some point in the future.

Google "5460 satoshis" for more info.

It is indeed 5430 sat.
This feature / limit is introduced in bitcoin-qt 0.8.2
FYI: https://github.com/bitcoin/bitcoin/pull/2577

First, to discourage people from bloating users' wallets and the UTXO set with tiny outputs.

This pull defines 'uneconomic dust' as 54.3 uBTC (5430 satoshis, about $0.007 at current prices), and treats any transaction with outputs less than 5430 satoshis as non-standard (won't be relayed, won't be mined). 5430 satoshis is derived from the cost (in fees) to spend a TxOut/TxIn. See https://people.xiph.org/~greg/txouts2.png for proportion of recent outputs this will (eventually) affect.

[oxfardk]

Why i can not send 1 satoshi ? And my wallet says "Transaction amount too small"

It's probably include a fix in the new version of your satoshi wallet