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

Compliance
RTI payroll in the UK: Full Payment Submission and EPS deadlines, penalties, and corrections

Under RTI payroll (Real Time Information), every UK employer reports pay to HMRC (HM Revenue & Customs, the UK tax authority) each time employees are paid. Each tax month (the 6th of one month to the 5th of the next)…

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Payroll Calculations
Colombia social security contributions and aportes parafiscales: what employers pay in addition to salary

Colombia social security contributions and aportes parafiscales cost an employer roughly 16% to 38% on top of each employee's salary, depending on the occupational-risk class and whether the employer qualifies for the…

Colombia social security contributions and aportes parafiscales: what employers pay in addition to salary
Payroll Calculations
Midijob 2026: how Germany's Übergangsbereich reduces employee contributions

A German employee who earns between €603.01 and €2,000 a month in 2026 holds a Midijob, and that pay band is called the Übergangsbereich (transition zone). In the Übergangsbereich, the employee's social-security…

Midijob 2026: how Germany's Übergangsbereich reduces employee contributions
Payroll Calculations
How Portugal taxes benefits in kind, and where the exemptions apply

A meal card and a company car are both pay. Portuguese tax law treats them that way by default: a benefit in kind (rendimento em espécie, non-cash remuneration provided because of the job) is employment income in…

How Portugal taxes benefits in kind, and where the exemptions apply
Payroll Calculations
How German wage tax is calculated: Lohnsteuer from gross to net

Lohnsteuer (German wage tax) is a prepayment of the employee's annual income tax (Einkommensteuer), not a flat percentage of gross pay. Each month the employer withholds an estimate of the annual income tax and remits…

How German wage tax is calculated: Lohnsteuer from gross to net