What is payroll software for a factory, and how is it different from office payroll?
Payroll software for a factory calculates what every worker earned from attendance and production data, deducts statutory contributions, and produces payslips, registers and a bank transfer file. The difference from office payroll is the input: an office pays a fixed salary per month, while a factory pays per piece, per shift, per hour of overtime and per day present.
In a typical manufacturing unit a single worker's wage can depend on five things at once: days present from the biometric terminal, pieces completed on the line, the shift they worked (night shifts often carry an allowance), overtime hours approved by the supervisor, and deductions such as canteen charges or advances. Multiply that by three hundred workers split across permanent staff, trainees and people supplied by two or three contractors, and a spreadsheet becomes a monthly risk.
A good factory payroll system keeps the rules in one place. The rate card for stitching a collar, the night allowance, the overtime multiplier and the professional tax slab for your state are all set once and applied the same way every month. The payroll clerk's job shifts from calculating to checking exceptions.
- Inputs: punches, production counts, leave, advances, rate cards, worker master data.
- Engine: earnings, overtime, allowances, statutory deductions, net pay.
- Outputs: payslips, wage register, PF and ESI files, PT and LWF summaries, bank upload file, accounting journal.
How does payroll software for factory units calculate piece-rate wages?
It multiplies each worker's approved count for each operation by the rate for that operation, adds any time-rate portion, and then tops up to the applicable minimum wage if piece earnings fall short. The key design decision is where the counts come from and who approves them.
In garment and footwear units, counts usually come from line supervisors at the end of each shift, entered on a phone against a bundle or ticket number. In engineering units they might come from machine counters or a production report. We build the entry screen to match your floor: bundle tickets with QR codes, a simple count grid per line, or an import from your existing production sheet.
Group piece-rate needs extra care. When a team of six completes 1,200 pieces together, the software has to split the earnings by an agreed rule: equally, by skill grade, or by hours each person was present. Rework and rejection also matter. Some factories deduct rejected pieces from the count; others pay the operation and charge rework to a separate code. The software should follow your practice, not force a new one.
Rate cards with history
Rates change when a new style starts or after a wage settlement. Each rate is stored with an effective date, so recalculating an old month uses the old rate and nobody argues about which number applied.
Minimum wage top-up
Piece earnings are compared with the minimum wage for the worker's skill category and the software adds the difference automatically, with the top-up shown as a separate line on the payslip.
Shift wages and overtime in payroll software for factory floors
Shift handling in payroll software for factory units means reading raw punches, deciding which shift each worker actually worked, and paying the right allowance and overtime for that shift. Overtime is where most manual payrolls go wrong, because it is typed in from registers that do not match the punch data.
The PRS Legislative Research summary of the Code on Wages, 2019 notes that overtime wages must be at least twice the normal rate of wages. Your software should apply that multiplier automatically and keep the hours worked, the hours approved and the amount paid side by side, so an inspector or auditor can follow the trail.
We build shift logic in layers. First, a roster assigns planned shifts. Second, punches are matched to the nearest planned shift, including night shifts that cross midnight. Third, rules decide late marks, half-days, overtime and allowances. Supervisors approve overtime in the app before it reaches payroll, which stops the common problem of workers staying on the premises and being paid for time nobody asked for.
- General, A, B and C shifts, with rotation every week or fortnight
- Night shift allowance per shift or per hour
- Weekly off swaps and compensatory off for holiday working
- Grace minutes, late marks and half-day rules
- Overtime approval by supervisor, then by HR, before payroll
PF, ESI, PT and LWF: what payroll software for factory units must produce
Every month, payroll software for factory units should produce the provident fund return file, the ESI contribution data, professional tax deductions under your state's slabs and labour welfare fund deductions where your state levies it. All four should come from the same payroll run, so the figures on payslips, registers and returns agree.
For ESI, the ESIC contribution page states rates of 0.75% of wages for the employee and 3.25% for the employer, effective from 1 July 2019, and says workers below a notified daily average wage are relieved from paying their share while the employer still pays. That exception is exactly the kind of rule a spreadsheet forgets and software should not.
Provident fund contributions are uploaded to the EPFO employer portal as an electronic challan cum return (ECR) file. Professional tax is a state levy with slabs that differ by state, and not every state charges it. Labour welfare fund contributions also differ by state in amount and frequency. We configure the rules for the states your units are in and keep them as editable tables, because these slabs are revised by notification.
We build the files and the checks; your accountant or compliance consultant files the returns and signs off. We do not give legal or tax advice, and you should confirm every rate with your consultant before go-live.
How should payroll handle contract workers versus permanent staff?
Keep contract workers in the same worker master but in a separate category per contractor, so attendance and costs are tracked in one place while wages and statutory payments stay with the right employer of record. Most factories use one of two models, and the software should support both.
In the first model the contractor pays the workers and raises a bill. The factory's system records attendance, calculates what the contractor should have paid, and checks the contractor's wage sheet and PF and ESI challans before the bill is released. In the second model the factory computes wages on the contractor's behalf and shares the register. Either way the principal employer wants proof that workers were paid correctly, because contract labour law places responsibility on the principal employer if the contractor fails to pay.
The contractor side is a large topic of its own, covering licences, gate passes and safety induction. We cover that in detail on our contract labour management software page. On the payroll side you need three things: a contractor field on every worker, a verification report comparing calculated wages with the contractor's sheet, and a hold flag that stops a bill until challans are uploaded.
Bank salary upload files and paying workers without cash
A bank upload file is a CSV or fixed-width text file in your bank's bulk payment layout, listing each worker's account number, IFSC and net pay, which you upload to corporate net banking to pay everyone in one batch. Factory payroll software should generate it directly from the approved run.
Each bank has its own layout, and some want a checksum or batch header. We ask for a sample file or the specification from your bank's corporate banking team and match it exactly. Where workers have accounts in several banks, the file can be split by bank or sent as one NEFT batch, depending on what your bank supports.
Two checks prevent most payment errors. First, an account master validation: IFSC format, duplicate account numbers and missing accounts are flagged before the run is approved. Second, a control total: the sum of the bank file must equal net pay on the register minus any cash or cheque payments. Workers without bank accounts yet are listed separately so HR can follow up.
Once salaries are paid, the software can send each worker a PDF payslip on WhatsApp in Hindi or English. That cuts down the queue at the HR window on salary day more than any other feature.
How to choose payroll software for factory operations: a buyer's checklist
Choose payroll software for factory work by testing it with your hardest real month, not a demo. Give any vendor, including us, one month of anonymised punches, production counts and last month's register, and ask them to reproduce your net pay figures. The gaps show up immediately.
Beyond that test, look at who controls the rules and the data. A system where you must raise a ticket to change a night allowance will slow you down every wage settlement. A system where your worker data sits on someone else's server with a limited export will make leaving expensive.
- Can it reproduce last month's payroll to the rupee from raw inputs?
- Are piece rates, shift rules and statutory slabs editable tables with effective dates?
- Does it produce the PF ECR file, ESI data and bank file you actually upload today?
- Does it separate contract workers by contractor and support wage verification?
- Who owns the source code and database, and can you export everything?
- Does it work on low-end Android phones and weak factory Wi-Fi for supervisors?
- Is there an audit log of who changed a rate, an attendance entry or a payment?
- What does support cost after launch, and who answers when payroll day goes wrong?
If most of your answers point to standard monthly salaries, compare subscription tools first. If they point to piece-rate, shifts and contractors, a custom build is usually the better fit. Our note on off-the-shelf versus custom software goes deeper into that decision.
What drives the cost of payroll software for factory units?
The biggest cost driver is the number of distinct wage rules, not the number of workers. A 900-worker unit with one shift and monthly salaries is cheaper to build for than a 150-worker unit with piece-rate on 40 operations, three shifts and two contractors. Our builds start at ₹60,000 for a single unit with core wage types.
After rules, the next drivers are integrations and approvals. Each attendance device brand has its own export or SDK. Each approval level (supervisor, HR, plant head, accounts) adds screens and notifications. Multiple units in different states add statutory variations. A native supervisor app adds a separate build.
What does not drive cost much: the number of payslips, the number of months of history you keep, or the size of the worker list. Those are storage and hosting questions, and cloud hosting for a mid-sized factory payroll is a small monthly bill paid directly to the provider from your account.
Other developers' quotes for similar work vary widely. The difference usually comes from how much of the rule complexity they have understood before quoting. Ask each quote to list the wage types, statutory outputs and integrations it covers. A cheap quote that says only "payroll module" often grows once real piece-rate rules appear.
How long does it take to build payroll software for factory units?
Most factory payroll builds take 6–12 weeks from signed quote to the first live payroll, and the last month is always a parallel run where the old method and the new software calculate the same payroll side by side. We do not switch off your existing process until two numbers match.
The first two weeks go on rules. We sit with your HR and accounts people over video calls, collect sample registers, rate cards, the bank file specification and statutory files, and write a rule sheet in plain language that your team signs off. Weeks three to seven are the build: worker master, attendance import, the wage engine, statutory outputs and payslips. Weeks eight and nine cover testing with real past months. The parallel run follows.
Timelines stretch for predictable reasons: rate cards that live in a supervisor's notebook, attendance devices with no export, or rules that change during the build. Telling us early is the best way to keep dates.
Who owns the payroll software and the worker data?
You do. The source code sits in a repository under your account, the database runs on a cloud account in your name, and the domain is yours. We work with access you grant and hand over credentials and documentation at the end.
Payroll data is sensitive: bank accounts, Aadhaar-linked UAN numbers, salaries, medical leave. We build role-based access so a supervisor sees counts and attendance for their line only, HR sees wages, and accounts sees the bank file. Every change to a worker's rate, attendance or pay is written to an audit log with the user and time. Backups run daily to storage in your account.
If you ever change developers, a new team can pick up from the repository and the handover notes. Nothing about the system depends on us being around, which is how it should be for software that pays people.
Risks and red flags when buying payroll software for factory units
The biggest risk is going live without a parallel run. The second biggest is a system whose rules are hard-coded so only the original developer can change them. Both show up months later, usually on salary day.
Watch for these warning signs in any proposal:
- No request for your real registers, rate cards or bank file before quoting
- Statutory rates typed into code rather than stored as editable tables
- No audit log for changes to attendance or wages
- Source code or database held by the vendor with no export clause
- Claims that the software makes you "fully compliant" (software supports compliance; your consultant confirms it)
- A single fixed price with no list of wage types, integrations or outputs
- No plan for the month the minimum wage or dearness allowance is revised
Honest limits from our side: we are three developers working remotely, so we do not install attendance hardware or visit the factory. We work with your existing devices and your electrician or device vendor for anything physical.
Technology behind a custom factory payroll system
We build factory payroll as a web application with a relational database, because payroll is a set of strict calculations over structured data. Typically that means a React or Next.js front end, a Node.js or Python (Django) back end and PostgreSQL, hosted on a cloud region in India such as AWS Mumbai.
Calculations run on the server, never in the browser, and each payroll run is saved as a locked snapshot once approved. If a rate changes later, the old run is not silently recalculated; a new adjustment run is created and shown on the next payslip as arrears. This is the single most useful design rule for payroll software, and it is often missed.
For supervisors on the floor we build a Flutter app for Android that works on inexpensive phones and caches entries when the Wi-Fi drops, syncing when the connection returns. Attendance devices are integrated through the manufacturer's SDK or scheduled CSV export. Our PostgreSQL work covers tuning when history grows over years.
A factory payroll run for a few hundred workers should compute in seconds, and payslip generation for the whole unit in a minute or two. If a demo takes longer than that with sample data, it will hurt on salary day.
Security matters more than visual polish. We use HTTPS everywhere, hashed passwords with optional two-factor login for HR and accounts, least-privilege database access, encrypted backups and IP or device restrictions for the admin panel where you want them.
Search visibility only matters if you plan to sell the system to other factories or offer payroll services. In that case a product website with clear pages per industry and structured data helps Google and AI assistants describe it accurately. Our SEO services cover that, though nobody can honestly guarantee rankings. For an internal tool, keep it off search engines entirely and restrict it to your network or logged-in users.
Payroll software for factory clusters across India
Factory payroll looks different in each industrial cluster because wage structures follow the industry. We work remotely with units anywhere in the country, and the rules we build reflect local practice and the state where each unit is registered.
Garment units in Tiruppur and hosiery makers in Ludhiana live on piece-rate per operation. Auto-component plants around Pune, Pithampur and Gurgaon run three shifts with heavy contract staffing. Diamond and textile units in Surat mix piece-rate with daily wages. Pump and foundry units in Coimbatore and Rajkot pay a mix of skilled monthly staff and daily-rated helpers. Chemical plants in Vapi and Ankleshwar run continuous shifts with night allowances. Uttarakhand units in Rudrapur often have workers from several states on the same roll.
State matters for professional tax and labour welfare fund, and multi-state groups need both handled per unit in one system.
Worked example: a 220-worker auto-components unit
Say a hypothetical auto-components maker in Pithampur has 220 workers: 90 permanent, 130 supplied by three contractors. It runs A, B and C shifts, pays a night allowance on C shift, and pays piece-rate on two assembly lines while the machine shop is time-rated. Payroll today takes the HR executive four days in Excel, and overtime disputes come up every month.
The build would start with a rule sheet: shift timings and grace, night allowance, overtime approval flow, piece rates for 28 assembly operations with effective dates, minimum wage categories, PT and LWF for Madhya Pradesh, and the bank's bulk file format. The supervisor app would record line counts per shift and overtime approvals. Face-recognition terminals already on the gates would feed punches through a scheduled export.
Contract workers would sit under their contractor. The unit would calculate what each contractor should pay, compare it with the contractor's wage sheet and hold the bill until PF and ESI challans are uploaded.
Scope like this would typically sit above the ₹60,000 starting point because of the piece-rate engine, contractor verification and supervisor app, and would take around ten weeks including a parallel month. This is an illustration of how we would scope it, not a past project.
Go-live checklist for payroll software for factory units
Before the first live payroll, walk through this list with HR, accounts and your compliance consultant. Every item should have a name against it.
- Worker master complete: category, skill grade, contractor, bank, UAN, ESI number, state
- Rate cards loaded with effective dates and checked by production
- Shift roster and overtime rules signed off by HR
- PT and LWF tables confirmed for each unit's state by your consultant
- Bank file tested with a small real batch through corporate net banking
- PF ECR and ESI files validated on the portals in test or preview
- Parallel run matched for at least one full month
- User roles set: supervisors, HR, accounts, plant head
- Backup and restore tested once
- Payslip language and WhatsApp template approved
For a broader view of how custom builds are priced, see custom software development cost in India.