Margin and markup use different bases
A ₹500 cost sold for ₹650 gives ₹150 profit. Markup is 30% of cost, while margin is about 23.08% of sales. Selling Price and Cost Price help work backward from a target; do not substitute one percentage for the other.
Separate unit economics from total profit
Break-even compares fixed costs with contribution per unit. Profit and Gross Margin summarize revenue and costs. Include relevant costs consistently; tax, refunds and payment fees are not automatically known by the tools.
Plan invoices and pay
Invoice combines line items with entered adjustments. Salary estimates take-home pay from effective deduction percentages. Salary Hike and Overtime answer narrower pay questions, while Gratuity has separate employment eligibility assumptions.