Under the legislation, the tax rate on beer and strong liquor will rise to 70% by 2027, a year later than initially proposed, before reaching 90% in 2031.
Vietnam currently imposes a 65% tax on these products and the initial proposal last year had the tax rising to as high as 100%.
The finance ministry has said the aim of the higher taxes is to curb alcohol consumption. Vietnam is Southeast Asia's second-largest beer market, according to a report by consultancy KPMG in 2024.
Vietnam's beer industry, led by Dutch brewer Heineken, Denmark's Carlsberg, and local brewers Sabeco and Habeco, has already faced challenges from stringent drink-driving laws introduced in 2019, which set a zero-alcohol limit for drivers.
The country's Beer and Alcoholic Beverage Association chief has said industry revenue has declined for the past three years.
On Saturday, the lawmakers also approved a new levy of 8% on sugary drinks exceeding 5g/100ml of sugar that will take effect in 2027 and rise to 10% in 2028.