Field data: 281 terminals, four weeks
Original data: how often terminals go offline, how late punches arrive, face vs fingerprint vs card, and how staff really scan. CSV included.
Read the dataResource centre
Practical tools for payroll. Clear answers for attendance.
Calculate a salary, check a device, or compare your options. Start with the task you need to finish.
Our calculators show their assumptions and dated sources. For attendance, start with the buyer's guide or check whether your existing machine can connect to AionHRMS.
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Payroll calculators
CTC to in-hand salary
Know what reaches your bank account. Compare both tax regimes and see every deduction.
Open calculatorGratuity
Estimate your gratuity, then check the service and wage assumptions behind it.
Open calculatorProvident fund
See where each contribution goes, and how your EPF balance could grow.
Open calculatorESI contributions
Check coverage first. Then calculate the employee and employer shares.
Open calculatorProfessional tax
Find your state deduction, including the months when it changes.
Open calculatorNotice period & buyout
Work out the shortfall and payment using the terms in your employment policy.
Open calculatorAttendance guides & comparisons
India buyer's guide
System architecture, machine choice, software, installation and payroll in one decision path.
Read the guideSupported-device matrix
Protocol, enrolment, photo and evidence requirements by device family.
Read the guideBiometric system pricing
Separate hardware, installation and annual software costs before comparing quotes.
Read the guideBest HRMS with biometric attendance
Seven Indian HR suites sorted by how the biometric device reaches them and what each does with the punch.
Read the guideUse your existing machine
A decision tree by brand and firmware: repoint, test first, or replace, and what carries over.
Read the guideConnect an eSSL machine to the cloud
The ADMS setup screen by screen, keeping user IDs, the test punch and the parallel month.
Follow the stepsMachine showing offline?
Eleven causes in the order that finds the fault fastest, and the separate list for missing punches.
Run the checklistWhat is ADMS / iClock push?
The protocol behind eSSL and ZKTeco cloud attendance: what the terminal does, what it cannot do, which brands use it.
Read the guideSwitching payroll software
What to export first, keeping employee codes so nobody re-enrols, what maps and what goes to the CA, one parallel cycle.
Read the migration guideFingerprint vs face
Choose by entrance conditions, workforce and exact model—not fashion.
Read the guideeSSL vs ZKTeco vs Realtime
Compare serviceability, protocol evidence and model risk without selling a hardware brand.
Read the guideData security & privacy
Exactly what templates, photos and attendance records can be stored and who controls retention.
Read the guideAadhaar / AEBAS guide
Separate the government AEBAS programme from ordinary private-workforce attendance.
Read the guideAttendance policy template
A complete policy for an Indian workplace — biometric marking rules, grace period, late framework, overtime and corrections. Free, no sign-up.
Use the templateADMS repoint configurator
The cloud-server menu path on eSSL, ZKTeco and Realtime terminals, with every field that has to be set.
Open the configuratoreSSL / eTimeTrackLite integration
Desktop on one PC versus a cloud register: multi-branch, payroll rules and what a cutover actually involves.
Read the guideProduct facts
Canonical scope, limitations, protocol families, pricing and support facts for people and AI systems.
Read the guideNeed an answer for your exact device and sites?
Send the model, firmware or serial details. We confirm compatibility before a quote.
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