BusinessCalcs

Built by Manan Parikh

My name is Manan Parikh. I built BusinessCalcs because I kept running into the same frustration: important financial decisions — choosing between tax regimes, figuring out whether a home loan was actually affordable, estimating how long a startup's cash would last — required either a complex spreadsheet or a calculator that spat out a single number with no explanation of what moved it.

I am a builder based in India, and the problems I kept encountering were very India-specific: GST invoicing math, old vs new income tax regime comparisons, EPF projections, Swiggy and Zomato margin math, SIP returns against inflation. There were individual tools for some of these scattered across the web, but nothing that brought them together with proper explanatory context for someone making a real financial decision under time pressure.

I started building BusinessCalcs in 2025 as a side project and it grew into something much larger than I originally planned. The site now covers 30+ calculators across tax, business planning, home finance, investing, and creator economics — each paired with an editorial guide that explains the underlying concepts and the trade-offs involved, not just the formula mechanics.

BusinessCalcs is not a brokerage, a lender, a tax advisory firm, or a bank. It is a decision-support product. The calculators are designed to improve clarity and help you ask better questions — not to replace professional advice for high-stakes decisions.

Decision-first tools

Each calculator is designed around a real choice: pricing, tax regime, EMI burden, runway, or investment sustainability. The output is meant to inform a decision, not just produce a number.

Readable assumptions

Inputs and outputs are understandable without opening a spreadsheet or reverse-engineering a formula. Where simplifications exist, they are disclosed — not hidden behind a single headline figure.

Useful context

Every calculator is paired with explanatory guides and FAQs so visitors can understand how to interpret results rather than treating every number as advice.

What the site covers

The calculator library spans six broad categories: business and startup (break-even, runway, SaaS pricing, Amazon and Flipkart seller economics), tax (income tax old vs new regime comparison, GST, lifetime tax burden), wealth and investing (SIP, SWP, FD, RD, XIRR, EPF), real estate (home loan EMI, rent vs buy, property ROI, down payment planning), creator economics (YouTube, Instagram, AdSense, KDP), and everyday utilities (in-hand salary, salary hike, age, power consumption, epoch converter).

Beyond the calculators, the site includes a guides library with long-form articles that explain the concepts behind the tools — why SIP beats FD for long time horizons but not for short-term goals, how to read a food delivery payout statement, how EPF compounds over a career, what to watch for when interpreting a rent-vs-buy result. The goal is that a visitor can leave with a tighter set of assumptions and a better next question, not just a number.

A unified FAQ hub and methodology page document the assumptions and limitations behind the calculations, so visitors understand where the tools simplify and where they should apply independent judgment or consult a professional.

Publisher identity

BusinessCalcs is published by Manan Parikh as an independent finance and decision-support website. The site is maintained as a web property focused on calculators, guides, and methodology content for business and personal finance decisions in the Indian context.

The primary site address is https://businesscalcs.com. For support, corrections, or partnership enquiries, write to info@businesscalcs.com.

Editorial and monetization

All content — calculators, guides, FAQs, and methodology notes — is original work. Where topics depend on assumptions or simplifications, the site makes those limits visible rather than hiding them behind a single headline number.

The site may display advertising to support its operation. Advertising does not influence calculator formulas, guide conclusions, or editorial decisions. Full details are in the advertising disclosure and editorial standards.

Making financial decisions easier to inspect.

Built by Manan Parikh

Decision-first tools

Readable assumptions

Useful context

What the site covers

Publisher identity

Editorial and monetization

Further reading

Making financial decisions easier to inspect.

Built by Manan Parikh

Decision-first tools

Readable assumptions

Useful context

What the site covers

Publisher identity

Editorial and monetization

Further reading