Question juridique clé
Whether the contribution assessment had to follow the tax authority's self-employment income notice.
Solution extraite
Yes. The compensation office was bound by the tax notice, and no clear error or socially relevant circumstance justified departing from it.
Motifs extraits
A rechtskräftige tax assessment is presumed correct; deviation is allowed only for obvious and readily correctable errors or for fiscally irrelevant but social-insurance-relevant facts. The appellant did not prove either ground, and the tax objection route had already failed.