Commerce & Corporate Finance Mathematics
Audit interest compounding schedules, calculate loan EMIs, evaluate e-commerce margins, and verify startup breakeven targets.
Interactive Study Guides
Interest Compounding
Master compound interest mathematics, compounding intervals (daily/monthly/yearly), future value formulas, and APY conversions with calculators.
Active Calculators & Solvers
Compound Interest Calculator
Calculate how compounding interest can grow your savings or investment over time. Model monthly deposits, interest rates, and compounding frequencies.
GST Calculator
Calculate net price, gross price, and Goods and Services Tax (GST) allocations for inclusive and exclusive taxes instantly.
EMI Calculator
Calculate your Equated Monthly Installment (EMI) for home, car, or personal loans. Understand how much you will pay each month and the total interest over the loan tenure.
Fixed Deposit Calculator
Calculate the maturity amount and total interest earned on your Fixed Deposit (FD) investment with flexible compounding frequencies.
PPF Calculator
Calculate the maturity value and total interest earned on your Public Provident Fund (PPF) investments with year-by-year compounding projections.
Recurring Deposit Calculator
Calculate the maturity amount and total interest earned on your Recurring Deposit (RD). Ideal for planning monthly savings with guaranteed returns.
Take-Home Salary Calculator
Break down your annual CTC (Cost to Company) into monthly take-home pay after deducting PF, professional tax, and other standard components.
SaaS MRR & Churn Growth Planner
Calculate SaaS Monthly Recurring Revenue (MRR), ARR, and long-term subscription growth. Model MRR additions, user churn, and customer lifetime value.
Customer Acquisition Cost (CAC) & LTV Studio
Calculate Customer Acquisition Cost (CAC) and Customer Lifetime Value (LTV). Determine your LTV:CAC ratio, payback periods, and marketing efficiency diagnostics.
E-commerce Profit & RoAS Calculator
Calculate e-commerce store revenue, net profit margins, and Return on Ad Spend (RoAS). Analyze Cost of Goods Sold (COGS), shipping fees, transaction costs, and CPA.
Startup Break-Even Point Analyzer
Calculate your business break-even point in units and sales revenue. Model fixed costs, retail unit prices, sourcing variable costs, and contribution margins.
Core Equations & Explanations
Compound Interest Future Value
Calculates interest earned on both initial principal (P) and prior accrued payouts.
Startup Contribution Margin
The slice of sales revenue that goes directly toward paying off fixed monthly overheads.
Retail Profit Margin
Measures standard retail bottom-line profitability after COGS, advertising, and merchant gateway fees are paid.
Practice Questions
If fixed costs are $5,000, selling price is $150, and variables are $50, what is the break-even volume?
A retail product sells for $100 and costs $65 in COGS/sourcing. What is the gross profit margin?