Free tools | Enterprise ERP
Finance tools, free for everyone
The calculators and references finance teams reach for. No sign-up, no email gate. Built by the OneFinOps team.
GST & Tax Tools
07 Income Tax Calculator FY 2025-26 slabs. New regime + old regime with 80C, HRA and Section 24 deductions. GST Calculator Add or remove GST at 0/5/12/18/28% with CGST/SGST or IGST split. TDS Rate Finder Pick a section (194C, 194J, 194Q, 195, etc.) and amount; get the rate, threshold check and TDS due. HSN & SAC Code Finder Search 500+ HSN and SAC codes with GST rates. Filter by goods, services, or tax slab. GST Late Fee Calculator Calculate late fees and interest for delayed GST return filing. Covers GSTR-1, 3B and 9. GST Invoice Generator Create GST-compliant tax invoices with auto CGST/SGST/IGST calculation. Download as PDF. E-Way Bill Calculator Check if an e-way bill is required and calculate validity based on distance and transport mode.
Payroll & HR Tools
05 CTC to In-Hand SalaryNew PF rule Convert CTC to take-home salary with PF on the new ₹25,000 ceiling, professional tax and FY 2026-27 income tax. EPF / PF CalculatorNew PF rule Employee and employer PF on the new ₹25,000 wage ceiling from 17 September 2026, with EPS and EDLI. ESI Calculator Calculate ESI contributions for employees and employers. Check wage ceiling eligibility. Professional Tax Calculator Calculate professional tax based on your state and salary. Covers all Indian states with PT slabs. Gratuity Calculator Calculate gratuity amount based on years of service. Covers both Act-covered and non-covered employees.
Compliance & Business Tools
05 Compliance Calendar GST, TDS, PF/ESI, PT, MCA and IT deadlines, month by month. MSME Late Payment Interest Calculate interest on delayed MSME payments under the MSMED Act. Based on 3x the RBI bank rate. DSO / DPO / CCC Calculator Calculate Days Sales Outstanding, Days Payable Outstanding and the Cash Conversion Cycle. AR Aging Report Calculator Bucket outstanding invoices into 0-30, 31-60, 61-90 and 90+ days. See % overdue and at-risk receivables. Working Capital Calculator Revenue, COGS, DSO, DPO and inventory days. Get working capital required and cash conversion cycle.
Run your finance ops on OneFinOps.
The calculators are for moments; the platform is for everyday work. AR, AP, procurement and compliance on one record.