Free Online Calculators & Tools
57 powerful tools for GST, Income Tax, Payroll, Finance & Business Compliance — built by Chartered Accountants, trusted by 25,000+ businesses across India.
All tools updated for Union Budget 2025-26 & latest GST Council notifications • Last reviewed: February 2026
Calculate GST amount, CGST, SGST & IGST instantly for any value
Search and find HSN/SAC codes for goods and services
Find TDS rates and calculate TDS deductions for all sections
Generate GST-compliant invoices with auto tax calculation
Calculate e-way bill requirements based on goods value and distance
Create professional P&L statements with automatic calculations
Compare Zoho Books, Tally, QuickBooks and other Indian accounting software
Estimate your Zoho Books subscription cost based on your needs
Generate a formatted balance sheet with auto-balancing
Calculate and project cash flows with operating, investing & financing activities
Convert CTC to in-hand salary with all deductions breakdown
Calculate EPF contributions, interest & retirement corpus
Calculate gratuity payable under the Payment of Gratuity Act
Calculate HRA exemption under Section 10(13A) for tax savings
State-wise professional tax calculation for all Indian states
Calculate ESI employer and employee contributions
Calculate total cost of hiring an employee including all statutory costs
Calculate statutory bonus payable under the Payment of Bonus Act
Calculate leave encashment amount and tax implications
Calculate TDS to be deducted on salary under Section 192
Track all GSTR filing due dates with reminders and alerts
Calculate GST late fee and interest for delayed filings
Check if you need GST registration based on turnover and business type
Check eligibility and benefits of GST Composition Scheme
Check if reverse charge applies to your goods or services
Pre-filing checklist for GSTR-9 annual return
GSTR-2A vs 3B Reconciliation Tool
GST Penalty Calculator
Check if your purchases qualify for Input Tax Credit claim
Find applicable GST rate for any product or service using HSN/SAC code
Compare tax liability under Old and New regime with deduction planning
Calculate EMI for home, car, personal & business loans
Calculate SIP returns, wealth creation & goal-based investment planning
Calculate FD maturity amount with interest for all major banks
Calculate PPF maturity, interest earned & yearly balance
Calculate return on investment percentage for any investment
Calculate EMI for business loans with amortization schedule
Calculate depreciation as per Income Tax Act with WDV & SLM methods
Calculate break-even point in units and revenue for your business
Calculate compound interest with different compounding frequencies
Calculate NPS maturity, monthly pension & tax benefits
Calculate recurring deposit maturity amount and interest earned
Estimate total cost of company registration including govt fees
Compare Pvt Ltd, LLP, OPC, Partnership & Proprietorship side-by-side
Check if your business qualifies for MSME/Udyam registration
Calculate total import duty including BCD, IGST & cess
Complete MCA/ROC filing calendar with all due dates & reminders
Check eligibility for DPIIT recognition & Startup India benefits
Track DIR-3 KYC filing deadline and avoid Rs.5,000 late fee
Complete annual compliance checklist for LLPs with due dates
Calculate exact age in years, months, days from date of birth
Calculate percentages, percentage change, increase & decrease
Calculate days, months & years between any two dates
Count words, characters, sentences & paragraphs in your text
Convert INR to 150+ world currencies with live exchange rates
Calculate stamp duty & registration charges for property transactions
Generate legally valid rent agreements with customizable clauses
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Real Stories from Real Businesses
Hear how teams across industries use Patron to save time, cut costs, & stay compliant.
I have had an outstanding experience working with my CA - Patron Accounting. Their professionalism, attention to detail, and timely communication made the entire process seamless and stress-free.
I am glad that I was able to connect with Patron. They took the minimum time to do the calculations based on the details provided by me and were really helpful throughout the process.
Really a fantastic experience with Patron Accounting especially Shubham, he was extremely great. Knowledgeable person who deserves the 5 star for smooth handling of all documentation.
Patron Accounting gives the best service related to all account handling of our firm. I am blessed and extremely happy that Patron Accounting assigned us a dedicated point of contact.
I have called Patron to file ITR for my 5 family members. I worked with Shubham Junjunwala and Amin Jain. It was a smooth process. They understand basics very well and respond promptly.
From the very beginning, their approach has been highly professional, prompt, and solution-oriented. Every interaction reflected their deep knowledge and commitment to helping clients.
Very proficient and professional staff. Do fantastic job and instant response. Strongly recommended engaging them for all accounting needs specially for startups and growing businesses.
I contacted them to file the ITR. Shubham was the POC for me and he was really very professional and giving prompt responses. Highly recommend them for tax and compliance work.
Excellent service for company registration and compliance. The team is very responsive and handles everything end to end. A trusted partner for Demandify Media.
Professional and timely service. Patron Accounting handled our company incorporation and compliance with great expertise. Highly recommended for startups.
I have had an outstanding experience working with my CA - Patron Accounting. Their professionalism, attention to detail, and timely communication made the entire process seamless and stress-free.
I am glad that I was able to connect with Patron. They took the minimum time to do the calculations based on the details provided by me and were really helpful throughout the process.
Really a fantastic experience with Patron Accounting especially Shubham, he was extremely great. Knowledgeable person who deserves the 5 star for smooth handling of all documentation.
Patron Accounting gives the best service related to all account handling of our firm. I am blessed and extremely happy that Patron Accounting assigned us a dedicated point of contact.
I have called Patron to file ITR for my 5 family members. I worked with Shubham Junjunwala and Amin Jain. It was a smooth process. They understand basics very well and respond promptly.
From the very beginning, their approach has been highly professional, prompt, and solution-oriented. Every interaction reflected their deep knowledge and commitment to helping clients.
Very proficient and professional staff. Do fantastic job and instant response. Strongly recommended engaging them for all accounting needs specially for startups and growing businesses.
I contacted them to file the ITR. Shubham was the POC for me and he was really very professional and giving prompt responses. Highly recommend them for tax and compliance work.
Excellent service for company registration and compliance. The team is very responsive and handles everything end to end. A trusted partner for Demandify Media.
Professional and timely service. Patron Accounting handled our company incorporation and compliance with great expertise. Highly recommended for startups.
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