How payroll outsourcing works in India: the statutory build-up end to end

Payroll outsourcing is not a list of calculators. Run properly, it is one accountable process: a salary structure built to the applicable rules, a monthly calculation, a disbursement on a fixed calendar, and statutory filing that happens on time because someone owns the dates. This post walks the full build-up so you know what you are handing over.

The month-to-month cycle

Every payroll provider runs the same loop you would run in-house, but with controls around it. The reference pages under payroll break it into four stages.

First, inputs are collected and checked — attendance, leave, reimbursements, investment declarations, new hires and exits (attendance and leave). Bad data is where payroll errors begin, so each run validates that the headcount is right, the data matches policy, and nothing is missing.

Second, the statutory deductions are applied while the salary is calculated, not after: PF, ESI, professional tax and TDS for each eligible employee (payroll process).

Third, gross minus deductions gives net pay, which is reconciled against the prior month before payment. Fourth, salaries go out and statutory dues are deposited and filed (post-payroll). The last step decides whether a run is compliant or a problem in waiting.

The salary structure that sits underneath

The provider does not just add up hours. The first task is structuring pay so it matches the law. Under the Code on Wages, 2019, basic wages must be at least 50% of total wages, because basic is the base on which PF, ESI, bonus and gratuity are calculated (Understanding CTC, labour codes). A structure with basic at 40% and a fat “special allowance” looked compliant under the old acts. Under the Wage Code that allowance counts as wages, so the structure has to be rebuilt. Get this wrong and the statutory base is understated from day one. The blue-collar CTC structure works through the components and a real example.

The statutory components, by name and rate

These are the constants that vary by employee and state:

• PF — 12% each side on basic plus DA, with the employer split between EPS and EPF and capped at the ₹25,000 wage ceiling. Deposited by the 15th of the following month. (PF)
• ESI — 3.25% employer, 0.75% employee, on wages up to ₹21,000 a month where the scheme applies. Also due the 15th. (ESI)
• Professional tax — a state levy, capped at ₹2,500 a year, deducted monthly where the state collects it (PT).
• TDS — income tax deducted at source, deposited monthly, reported quarterly (tax).
• Gratuity — an accruing liability paid on five years of service, at 15 days’ wages per year, capped at ₹20 lakh (gratuity).
• Bonus — a mandatory annual payment for eligible employees, 8.33% to 20% of the capped wage base, by 30 November (bonus).
• Labour Welfare Fund — a small state contribution where the state runs the fund, at rates and intervals each state sets (LWF).

None of these are optional line items. They are what turns a wage into a compliant payroll, and they differ by state.

Where state variation lives

The reason payroll breaks as you grow is that almost every component above varies. PF and ESI thresholds do not. But professional tax slabs do, minimum wages differ by state, skill level and employment class, and the LWF, due dates and registers vary by state (minimum wage, compliance checklist). Spreadsheets handle one state up to a point. They stop being reliable the moment your headcount spreads across Bangalore, Mumbai, Delhi and a manufacturing unit in Gujarat.

What outsourcing adds on top

The mechanical calculation is the easy half. The value of a provider is the structure around it: a documented payroll calendar with cut-offs and disbursement dates, a named owner and a defined approval path, and an audit trail that survives inspection. Filing dates are tracked against a register, and every correction is documented rather than silently edited. On the payroll service page this shows up as a running payroll calendar, reconcileable dates and amounts, and registers you can hand to an inspector.

What to check before you sign

Treat the handover like any migration. Reconcile the current payroll first — headcount, states, statutory components, and any gaps in the last runs. Agree the calendar and the success measures before the first run. The labour-cost calculator is a useful way to price the components yourself up front, so you can tell whether the quote matches the statutory build-up or leans on thin margins you will pay for later.

The bottom line

Outsourcing payroll works when the provider runs the full statutory build-up as one process — structure, calculation, disbursement and filing — with a calendar and an audit trail you can inspect. The rates above are the baseline. Confirm the current notification for each state you operate in before the first run.

Frequently asked questions

What does a payroll provider actually do every month?

Four things, in order: collect and validate the inputs — attendance, leave, joiners, exits, reimbursements; calculate gross pay and apply the statutory deductions while doing so; reconcile net pay against the previous run and disburse it; then deposit and file the statutory dues by their own dates. The value is not in the arithmetic. It is in the calendar, the reconciliation and the audit trail that make each run repeatable.

What information do I have to give the provider?

Attendance and leave records, the employment contracts or offer letters behind each salary, the salary structure per employee, details of new joiners and exits, investment declarations for TDS, and your existing statutory registration numbers. The quality of what you hand over decides the quality of the first few runs, which is why the handover should include a full reconciliation of the current payroll rather than just a file transfer.

Is it legal to outsource payroll in India?

Yes — there is nothing that requires an employer to run payroll itself, and using a service provider is standard practice. What outsourcing does not do is change who the employer is. The statutory liability for paying wages, provident fund and ESI remains with the employer unless the workforce itself is employed by the provider. Choose deliberately between outsourcing the process and outsourcing the employment.

What happens to my PF and ESI registration numbers?

They stay yours. The provider files returns against your establishment codes using the credentials you authorise, and the contributions are deposited in your establishment’s name and your employees’ accounts. That matters on exit as much as on entry: because the codes were never the provider’s, moving to another provider or back in-house does not disturb the employees’ records.

How is a payroll provider’s fee structured?

Usually per employee per month, sometimes with a separate per-return charge for statutory filings and a one-time implementation fee. Ask what is inside the headline rate — statutory filing, helpdesk for employee queries, annual returns, corrections, and support during an inspection — because the add-ons are where a cheap quote stops being cheap. Get the fee for an exit or a bulk correction in writing too.

Who is responsible if the provider makes a mistake?

The employer remains responsible to the employee and to the authority; the provider’s liability to you is whatever the contract says. That is why the contract should state a timeline for corrections, an obligation to bear interest and damages caused by its own delay, and a documented correction process. Without those clauses, the penalty is yours and the argument is theirs.