Mehmood Deshmukh

Mehmood Deshmukh

CTO & Co-Founder

Mehmood is the CTO and co-founder of Flux. A founding engineer at Sphere and at Capbase before its acquisition by Deel, he builds the systems behind Flux’s payroll and compliance engine and writes about the engineering of getting payroll right.

Articles by Mehmood Deshmukh

Payroll Calculations
The aguinaldo: how Mexico's mandatory Christmas bonus works in payroll

Every employer in Mexico owes each worker an aguinaldo of at least 15 days of salary, and it has to be paid before 20 December each year (LFT Art. 87). This is not a discretionary bonus or a performance reward. It is a…

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Payroll Calculations
IMSS Contributions in Mexico: What the Worker Pays and What the Employer Pays

A Mexican payslip shows a single line for the worker's IMSS deduction, and that single line hides how the social-security bill is actually built. Every contribution to the Instituto Mexicano del Seguro Social (IMSS, the…

IMSS Contributions in Mexico: What the Worker Pays and What the Employer Pays
Payroll Calculations
How Mexican Income Tax Is Calculated on a Payslip: ISR From Gross to Withholding

Mexican income tax, the ISR (Impuesto Sobre la Renta), is a progressive tax that the employer withholds from each payment and pays to the tax authority (SAT) by the 17th of the following month. On paper the calculation…

How Mexican Income Tax Is Calculated on a Payslip: ISR From Gross to Withholding
Payroll Calculations
How French Income Tax Is Calculated on a Payslip: The Prélèvement à la Source, End to End

French income tax works differently from most payroll deductions: the employer withholds the tax every month but never calculates how much income tax the employee actually owes for the year. Since January 2019, income…

How French Income Tax Is Calculated on a Payslip: The Prélèvement à la Source, End to End
Payroll Calculations
The UK Is Moving Benefits in Kind Into Real-Time Payroll: The End of the P11D

The UK is changing how employee benefits in kind are taxed, and while it is being presented as an administrative simplification, it changes what anyone running payroll has to do each month, and it changes what employers…

The UK Is Moving Benefits in Kind Into Real-Time Payroll: The End of the P11D