The discrepancy arises because the unpaid leave amount might be calculated but not correctly integrated into the net salary deduction within your salary rules.

  Verify your salary rule configuration. Ensure the "Unpaid Leave" rule is correctly subtracting the unpaid leave amount from the gross salary.

  Check the rule's sequence and dependencies. It should be applied *after* gross salary calculation and *before* net salary calculation.

  Review the rule's formula and ensure it accurately reflects the unpaid leave amount. Test with a simple calculation (e.g., subtracting the number of unpaid leave days multiplied by the daily rate).

If you'd like to explore this further for your use case, you're welcome to connect with us at Pragmatic Techsoft.

Hi,

In Odoo Payroll, if unpaid leave shows up on the payslip but does not reduce the net salary, it usually means the salary rule for unpaid leave is not properly configured. You need to check that the rule’s Condition (Based on code) matches the time-off code used for unpaid leave, and that the Computation method is set to deduct from the base (e.g., using worked days inputs like worked_days.UNPAID.number_of_days or worked_days.UNPAID.number_of_hours). Also confirm the Category of the rule is set under “Deduction” so it impacts the Net Salary calculation. In short, align the unpaid leave time-off code with the salary rule condition, ensure the formula deducts correctly, and place the rule in the right sequence/category so it reduces Net Salary.

For more information, refer to the following.

* https://www.youtube.com/watch?v=khAu-pL40NU

* https://www.youtube.com/watch?v=uU4KPDUQDPM

* https://www.cybrosys.com/blog/an-overview-of-odoo-18-payroll-module

* https://www.cybrosys.com/blog/an-overview-of-odoo-16-time-off-module

Hope it helps