™CASNOS contribution calculator (self-employed)
Calculate the annual social contribution for self-employed workers (CASNOS) by declaration scheme
CASNOSThe full guide
Guide to CASNOS 2026
Who has to join CASNOS, the 15% contribution rate and its limits in 2026, the three declaration and payment deadlines, the late penalty, and the invalidity, retirement and survivor's pensions, with the texts of the decrees.
About this tool
The CASNOS calculator estimates the annual social contribution for non-salaried workers in Algeria (merchants, artisans, liberal professionals, auto-entrepreneurs). Under executive decree 26-257 of 15 July 2026, the contribution equals 15% of the annual declared assessment base (7.5% for social insurance plus 7.5% for retirement), with a minimum of 43,200 DA (on an assessment base of 288,000 DA, the annual SNMG) and a maximum of 864,000 DA (on 5,760,000 DA, 20 times the annual SNMG).
It covers the four declaration schemes: standard, real, and auto-entrepreneur (assessment base declared directly), and the flat-rate scheme where the assessment base is a percentage of turnover (25% for sale of goods and production, 35% for services). The contribution is also broken down into quarterly and monthly payments.
CNAS
DGI