Business model types explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Before an investor reads a forecast, they ask how the business makes money from one customer. A business model is the answer in words; unit economics is the same answer in rupees for a single customer or a single unit. Together they show whether growth will build value or just burn cash.
A business model describes who the customer is, what is offered, how it reaches the customer, how money comes in, what it costs and what resources it needs. Unit economics measures one customer: revenue less variable cost is the contribution; the cost of acquiring the customer, divided by monthly contribution, is the payback period; contribution over the customer's life is the lifetime contribution. A model that loses money on each customer, or takes longer to earn back the acquisition cost than customers stay, does not scale.
The parts of a business model
| Part | Question it answers | Example for a learning app |
|---|---|---|
| Customer | Who pays and who uses? | Exam candidates, or their parents |
| Offer | What problem is solved? | Practice tests and recorded lessons |
| Channel | How does the customer find and receive it? | Search ads, referrals, the app itself |
| Revenue | How and when does money come in? | A monthly subscription |
| Costs | What drives cost, fixed and variable? | Team and tools; payment fees, hosting, support |
| Key resources | What must the business own or control? | Content, software, trained staff |
Writing the model in this form for your own business, before building any forecast, is the first step in building a financial model.
Common revenue models compared
| Model | How money comes in | Strength | What to watch |
|---|---|---|---|
| Product sale | One sale per unit | Simple; margin visible | Customers must be won again each time |
| Subscription | Recurring fee | Predictable revenue | Churn, the rate at which customers leave |
| Marketplace or commission | A share of each transaction | Grows with volume without holding stock | Needs both sides of the market; commission can be bypassed |
| Franchise | Fee and share of sales from operators | Growth with others' capital | Control of quality; legal framework |
| Licensing | Royalty for use of rights | Little cost per extra user | Depends on strong rights; see the sister guide on commercialising intellectual property |
| Asset-light contract manufacturing | Per-unit price for making to a customer's order | Low capital need | Dependence on few customers |
| Advertising-supported | Others pay for access to users | Users pay nothing | Needs very large audiences |
Most businesses combine models. A subscription app may also sell a one-time course. The point is to know which model produces the bulk of the revenue and what happens to the cash when volume changes.
If you are preparing this for an investor or lender, our investor pitch deck financials service puts the unit economics into the form that a reader tests first.
Unit economics: the measures
| Measure | In words | In symbols |
|---|---|---|
| Contribution per customer per month | Revenue per customer − variable cost per customer | C = R − V |
| Contribution ratio | Contribution ÷ revenue | C ÷ R |
| Customer acquisition cost (CAC) | Sales and marketing spend ÷ new customers won | CAC |
| Simple payback | CAC ÷ monthly contribution | CAC ÷ C |
| Average life | One ÷ monthly churn rate | 1 ÷ c |
| Lifetime contribution | Monthly contribution × average life | C ÷ c |
| Break-even customers | Monthly fixed costs ÷ monthly contribution | F ÷ C |
The break-even idea is the one used in break-even analysis; here the "unit" is a customer-month.
Worked example: a subscription learning app
Vidya Loop (invented) charges ₹500 a month. All figures are assumed.
- Variable cost per subscriber per month: payment fee ₹15, hosting ₹25, support ₹40, content licence share ₹40 = ₹120.
- Contribution = 500 − 120 = ₹380 a month; contribution ratio = 380 ÷ 500 = 76 per cent.
- CAC = ₹1,900 (assumed advertising and onboarding cost for each new subscriber).
- Simple payback = 1,900 ÷ 380 = 5 months.
- Monthly churn = 5 per cent (assumed), so average life = 1 ÷ 0.05 = 20 months.
- Lifetime contribution = 380 × 20 = ₹7,600, which is 7,600 ÷ 1,900 = 4.0 times the CAC.
- Fixed costs per month: team ₹1,70,000, tools ₹18,000, rent ₹20,000, other ₹20,000 = ₹2,28,000.
- Break-even subscribers = 2,28,000 ÷ 380 = 600.
Simple payback ignores that some subscribers leave before the fifth month. A cohort of 100 new subscribers loses 5 per cent each month, so the contribution in month m is 380 × 0.95^(m−1) per original subscriber. The table tracks one subscriber won today.
| Month | Share still subscribed | Contribution in month (₹) | Cumulative (₹) |
|---|---|---|---|
| 1 | 1.0000 | 380.00 | 380.00 |
| 2 | 0.9500 | 361.00 | 741.00 |
| 3 | 0.9025 | 342.95 | 1,083.95 |
| 4 | 0.8574 | 325.80 | 1,409.75 |
| 5 | 0.8145 | 309.51 | 1,719.26 |
| 6 | 0.7738 | 294.04 | 2,013.30 |
Check: cumulative after month 5 is 1,719.26, below the CAC of ₹1,900; after month 6 it is 2,013.30, above it. With churn the payback is 6 months, one month longer than the simple figure. (Rounded to two decimals; the share column is shown to four.)
Answer: contribution ₹380 per subscriber a month; payback 5 months simple and 6 months allowing for churn; lifetime contribution ₹7,600; break-even at 600 subscribers.
How to read the result
The owner learns three things. The business earns a healthy contribution per subscriber, but cash for acquisition goes out at the start and comes back over six months, so the growth has to be funded; the faster the app grows, the more cash it needs. The break-even of 600 subscribers must be put against the customers the business can realistically win; the figure is a monthly number before the acquisition spend itself. And a rise in churn hurts quickly: at 8 per cent a month the average life falls to 12.5 months and the lifetime contribution to 380 × 12.5 = ₹4,750.
An investor will test these figures before any valuation; the forecast that follows is in DCF valuation, and the funding routes that suit different stages are in types of start-up capital. The input sheet and drivers that carry these numbers into a full model are in how to build a financial model.
Signs that a model does not scale
- Contribution per customer is negative or close to zero.
- Payback is longer than the average customer life.
- Acquisition cost rises as the business grows.
- Revenue depends on one or two customers or one channel.
- Fixed costs must rise in steps ahead of revenue.
- Growth needs cash that no source of funds covers.
Common mistakes
- Counting only the cost of ads and leaving out onboarding or sales staff in CAC.
- Using an average churn rate for customers who leave at very different speeds.
- Treating all fixed cost as variable, or the reverse.
- Forgetting payment fees, support and returns in variable cost.
- Quoting lifetime value without the margin, which overstates it.
- Using unit economics from a single strong month rather than a typical one.
Need help with unit economics for a pitch?
Investors and lenders want to see the model reduced to a customer, a contribution and a payback before they read a projection. Our investor pitch deck financials team can work out these figures with you from your own data.
Key takeaways
- A business model has six parts: customer, offer, channel, revenue, costs, key resources.
- Contribution = revenue − variable cost per customer.
- Payback = acquisition cost ÷ monthly contribution; allow for churn.
- Lifetime contribution = monthly contribution ÷ churn rate.
- Break-even customers = fixed cost ÷ contribution.
Read next
- How to build a financial model
- Discounted cash flow (DCF) valuation of an unlisted company
- Break-even point, contribution and margin of safety
- Types of start-up capital
Disclaimer: The figures, rates, multiples and names in the worked example are invented for illustration and are not market data. Where the article refers to law, it is based on the Companies Act, 2013 (MCA consolidated text) and the rules and live guides linked, as consulted on 6 October 2026; valuation for income-tax and FEMA purposes follows its own rules. This article is general information, not valuation, lending or legal advice; check the official text before acting.