A2A Transfer Methods
This is a directory of sites and services where account-to-account (A2A) transfers are possible.
Bitcoin Accounts
The following are sites and services where bitcoins may be transferred from one user account to another, internally, without there being an external transaction (e.g., blockchain, bank network, etc.). Redeemable codes are bearer codes which can be passed (securely) from one account holder to another.
| Service | Website | Method | Exchanges | Notes / Alternate |
| Bitstamp | Bitstamp.net | Redeemable code | BitInstant | Denominated in BTC, USD, or a combination of BTCs and USDs. |
| BTC-E | BTC-e | Redeemable code | BitInstant (destination) | Denominated in BTC, USD, and RUR RUB. |
| Camp BX | CampBX.com | Transfer | BTC transfers only. Transfer to recipient's CBX Instant Transfer Code (shown in User Profile). | |
| Coinapult | Coinapult.com | Send | BTC transfers only. Send to an e-mail address or mobile number. | |
| Coinbase | Coinbase.com | Send Money | BTC transfers only. Send to an e-mail address. | |
| MailACoin | MailaCoin.com | Send Money | BTC transfers only. Send to an e-mail address. | |
| Seals With Clubs poker | SealsWithClubs.eu | Transfer | Send "Seals Chips" to any username. |
Other
Financial services which allow transfer of funds from one account to another.
| Service | Website | Method | Exchanges | Notes / Alternate |
| T-Mobile | Mobile Money from T-Mobile | Send Money | /a | Customer-to-customer transfer, ATM withdrawal, load cash at any T-Mobile location. |
| Dwolla | Dwolla.com | Send | n/a | Send to an e-mail address, mobile number or Dwolla account number. USD denomination. |
| Square | Square Gift Cards | Gift | Send a gift card to anyone. | Send to an e-mail address. USD denomination. U.S. merchants only. |
| Intrade | Intrade.com | Transfer | Bitcoin TX | Customer-to-customer transfer, requested made by phone or via e-mail. |
| OKPay | OKPay.com | Send Money | n/a | Send money to any e-mail address or OKPay Wallet ID. USD denominations. |
| PayPal | PayPal.com | Send Money | n/a | Send money to any e-mail address or mobile number. Denominations selected automatically. |
| Scottrade | Scottrade Transfer Authorization | Transfer | n/a | Transfer cash or securities from one account to another. |
| Schwab | Scwab Transfer letter | Transfer | Transfer cash or securities from one account to another. | |
| Payza | Payza.com | Send | n/a | Send money to any e-mail address. USD, EUR, GBP or CAD denominations. |
| Pingit | Barclays Pingit | Send | BlockChain.info | Send money to any Mobile number or e-mail address. GBP denomination only. |
| VirWoX | VirWoX.com | Send | n/a | Transfers of SLL (Second Life Lindens) only. Send to another VirWoX account id. |
| nTrust | nTrust.com | Transfer | n/a | Funds received can be spent using nTrust prepaid debit card (Cash card). |