Circular No. 157/2015/TT-BTC dated October 08, 2015 of the Ministry of Finance on collection, payment, management of fees for issuance of passports, visas, documents related to entry, exit, transit and residence in VietnamÂ
10/8/2015 (good news : from 23 Nov 2015, stamp fee for visa on arrival at international airport of Vietnam will be $25USD for single entry visa & $50USD for multiple entry visa, please see below for details)