About DecisionLab.in
Practical Business Tools. Clear Calculations. Better-Informed Decisions.
Running a business involves making decisions about pricing, costs, discounts, taxes, cash flow and profitability. These decisions often come down to understanding a few important numbers—and knowing how to interpret them correctly.
DecisionLab.in helps Indian business owners understand those numbers through practical calculators, decision-making tools and educational guides.
Our focus is simple: explain the calculation, show how it works, and help readers understand what the result means for their business.
Who We Are
DecisionLab.in is developed and maintained by RACTOW, a technology business working on mobile and web-based business applications.
The platform brings together two complementary areas of work:
- Business software: Building practical digital tools for everyday business operations.
- Business decision support: Making calculations and financial concepts easier to understand and apply.
DecisionLab.in is an educational and decision-support platform. Its calculators and articles are intended to help users evaluate business situations, rather than replace professional accounting, taxation or financial advice.
About the Author
Kajal Mandal
Kajal Mandal is the author and creator behind DecisionLab.in, with a practical focus on business calculations, financial decision-making and technology for small businesses.
The work behind DecisionLab draws on hands-on product development, the process of building business tools, and the practical questions that arise when managing business operations.
These include questions such as:
- How should a product be priced to achieve a target profit margin?
- How much does a discount reduce the profit earned on a sale?
- What is the difference between markup and profit margin?
- How do you calculate GST from an inclusive selling price?
- How much must a business sell to cover its fixed and variable costs?
- Why can a business generate revenue without generating sufficient profit or cash?
Rather than treating these as abstract formulas, DecisionLab aims to explain them through worked examples, interactive calculators and practical scenarios.
Kajal is also the author of Do the Math First: 25 Numbers to Calculate Before Starting a Business, a book focused on the numbers entrepreneurs should evaluate before starting a business.
The Role of RACTOW
RACTOW provides the technology foundation behind DecisionLab.in.
One of its products is RPOS, a point-of-sale application designed for business operations such as billing, product management, discounts, customer memberships and sales processing.
Developing business software requires translating everyday operational requirements into workable features, calculations and workflows. This product-development perspective informs the way DecisionLab approaches business problems: start with a specific question, identify the relevant inputs, apply the appropriate calculation, and explain the result.
Explore the RPOS platform to learn more about the software.
Practical Problems We Cover
DecisionLab.in focuses on calculations and decisions that matter to small businesses, retailers, service providers and entrepreneurs in India.
Pricing and Profitability
Understand selling prices, gross profit, profit margins, markups and the effect of discounts. Learn how costs and pricing decisions influence the money retained from each sale.
GST Calculations
Work through GST-inclusive and GST-exclusive prices, tax components and backward GST calculations. Our tools help with the arithmetic; users should independently confirm the applicable tax rate and treatment for their transactions.
Costs and Break-Even
Explore fixed costs, variable costs, contribution margins and break-even sales. Understand how changes in selling price, costs and sales volume affect business viability.
Business Planning and Decision-Making
Use practical scenarios and decision-support tools to explore how business assumptions influence revenue, expenses, profitability and cash flow.
How We Develop Our Resources
We aim to make each resource useful, understandable and transparent.
- Explain the method: Show the formula or calculation behind the result.
- Use practical examples: Demonstrate how the calculation works with clearly stated assumptions.
- Build useful tools: Turn repeatable calculations into accessible online calculators.
- Check important facts: Verify formulas and relevant tax or regulatory information against appropriate sources.
- Recognise limitations: Explain when a result depends on assumptions, missing information or circumstances that require professional advice.
A calculator can produce a numerical answer, but a good business decision also requires context. Our goal is to help readers understand both.
Independence and Transparency
DecisionLab.in publishes educational content and provides tools for business decision-making. It does not claim that using a calculator guarantees profitability, business success or regulatory compliance.
Where a resource contains assumptions, limitations, external references or commercial links, these should be made clear to readers.
Some pages may contain affiliate links. As an Amazon Associate, DecisionLab earns from qualifying purchases. Affiliate relationships do not change the mathematical principles used in our calculators.
Our Mission
Our mission is to make practical business calculations and decision-support resources accessible to Indian entrepreneurs.
We believe better decisions begin with understanding the numbers behind them.
Whether you are evaluating a selling price, checking a profit margin, calculating GST or estimating your break-even point, DecisionLab.in aims to help you move from guesswork towards informed analysis.
Get in Touch
Have a question about a calculator, spotted a possible error, or want to suggest a topic?
We welcome feedback, corrections and suggestions that help us improve the usefulness and accuracy of our resources. If you have a question, spot a possible error, or would like to suggest a topic, you can reach out to us using the business email address provided in the footer of every page.