I am based in South Africa implementing ERPnext. I have a slight problem with implementing the deductions formula. I the government has supplied us with a tax table in following format
You can try achieve this by defining the formulas in the salary components.
I will share links for NHIF, NSSF and PAYE, NHIF rates are close to the PAYE table you’ve given above.
Then I will share a list of salary components, and how we achieved for each case.
You can even import the salary components into a test environment and review the formulas, remember to include conditions for age in your case.
Links, they give tables of each (PAYE, NHIF and NSSF)
@Lukerosa did you ever map the South African income tax tables for ERPNext? If so, I would greatly appreciate if you could export a set for the 2021 tax year that I can import on my side, also currently building a lab to test ERPNext for deployment.