Small Business Valuation Calculator
Enter your seller's discretionary earnings and the multiple that fits your business model. The tool estimates a reasonable sale price range after applying growth expectations, included assets, and a risk discount.
Introduction: How the small business valuation calculator estimates sale value
This small business valuation calculator is built for side hustles, micro businesses, and owner-operated companies. It estimates what a buyer might pay today from seller’s discretionary earnings (SDE), a chosen earnings multiple, a one-year growth outlook, and risk or transition adjustments.
It is not a formal appraisal. Instead, it helps you develop a realistic sale-price ballpark before speaking with buyers, brokers, or an accountant.
Small business SDE valuation formula
The calculator estimates small business value in five steps:
- Start with annual seller’s discretionary earnings (SDE).
- Adjust SDE up or down for one year of expected growth or decline.
- Multiply by a market-based earnings multiple.
- Add assets that transfer with the sale and subtract required working capital and assumed debt.
- Apply a risk or transition discount to account for uncertainty.
For this small business sale-price estimate, the formula is:
Formula: V = (SDE × (1 + g / 100) × M + A − W − D) × (1 − r / 100)
Where:
- SDE = seller’s discretionary earnings (annual)
- g = growth adjustment for next year (%)
- M = earnings multiple (how many times SDE a buyer might pay)
- A = inventory or assets included in the sale
- W = working capital the buyer must add
- D = business debt the buyer will assume
- r = risk or transition discount (%)
Small business valuation inputs explained
Seller’s discretionary earnings (SDE). For an owner-operated small business valuation, SDE is business profit plus the owner benefits you take out. Start from net income on your tax return or profit and loss statement, then add back your own salary, health insurance, and clearly personal expenses run through the business. For owner-operated side hustles, SDE is usually the most useful starting point.
Business profile and multiple. The profile dropdown supplies a typical SDE multiple for common micro-business models, including solo services, e-commerce, subscriptions, and reselling. Buyers of small, owner-heavy businesses often pay around 1.5× to 4× SDE. Strong systems, recurring revenue, and low owner dependence can support higher multiples; platform risk, key-person risk, and customer concentration can pull them down.
Growth adjustment (%). In this small business valuation, a positive percentage increases next year’s SDE before the multiple is applied. Enter a negative percentage if the business is shrinking or you expect a one-time revenue loss. This is a simple one-year earnings adjustment, not a multi-year forecast.
Assets, working capital, and debt. Inventory, equipment, or other assets that clearly transfer with the business are added to the earnings-based value. Required working capital, such as cash a buyer must inject to keep operations running, and business debt the buyer will assume both reduce the estimate.
Risk or transition discount (%). A small business sale estimate may need a discount for execution risk. Use a higher discount if the business depends on one platform, a few key customers, or undocumented owner-only processes. A lower discount may fit a business with clean books, diversified revenue, and a documented handover plan.
Worked example: valuing a solo service side hustle
Consider a solo web designer selling a part-time service business:
- SDE: $40,000 per year (after adding back owner salary and perks)
- Profile: solo service or freelancing
- Chosen multiple (M): 2.0× SDE
- Growth (g): 5% (modest expected increase in demand)
- Assets (A): $2,000 of computer equipment included in the sale
- Working capital (W): $0 (clients pay deposits, little cash is needed up front)
- Debt (D): $0 (no business loans transfer)
- Risk discount (r): 15% (clients are concentrated and most work is tied to the owner)
Step 1: Adjust SDE for growth:
$40,000 × (1 + 5÷100) = $40,000 × 1.05 = $42,000
Step 2: Apply the multiple:
$42,000 × 2.0 = $84,000
Step 3: Add assets and subtract working capital and debt:
$84,000 + $2,000 - $0 - $0 = $86,000
Step 4: Apply the risk discount:
$86,000 × (1 - 15÷100) = $86,000 × 0.85 = $73,100
The estimated sale value for this solo service business is about $73,000. A serious buyer could negotiate higher or lower based on how readily client work transfers and how involved the seller will be during handover.
How small business SDE valuation compares to other approaches
This small business valuation calculator uses an SDE multiple because many buyers assess owner-operated businesses that way. Larger companies and startups are often valued with other methods, such as EBITDA multiples, revenue multiples, or discounted cash flow (DCF). The table below shows where each approach is generally most useful.
| Method | Typical use case | Pros | Cons |
|---|---|---|---|
| SDE multiple (this calculator) | Side hustles, micro businesses, owner-operator service and e-commerce businesses | Reflects total economic benefit to an owner; simple to explain; widely used in main-street deals | Assumes a single full-time owner-operator; less suitable for businesses with management teams |
| EBITDA multiple | Larger small businesses and lower-middle-market companies | Focuses on operating performance independent of owner; aligns with many professional buyers | Requires clean financials; may understate value of owner perks in very small businesses |
| Revenue multiple | High-growth startups, SaaS, marketplaces with thin or reinvested profits | Useful when current profit is not representative; quick for back-of-the-envelope checks | Ignores cost structure and owner effort; can mislead for low-margin or unstable revenue |
| Asset-based value | Capital-intensive or closing businesses (liquidation scenarios) | Grounded in tangible assets; helpful floor value | Does not capture the value of brand, customer relationships, or systems |
For most side hustles and small online or service businesses in which the owner remains heavily involved, an SDE multiple is usually the most relevant starting point.
Small business valuation assumptions and limitations
This small business valuation estimate depends on simplified assumptions about ownership, earnings, and the proposed sale terms.
- Owner-operator focus. The calculation assumes a single primary owner actively working in the business. If you have a management team and pay yourself a market-rate salary, an EBITDA-based approach may fit better.
- Stable or gradually changing business. The growth input is a simple one-year adjustment. It does not model detailed multi-year forecasts or changing margins.
- Simple deal structures. The estimate assumes a straightforward asset sale with inventory, key equipment, and agreed debt included. It does not model earn-outs, seller financing, equity rollovers, or complex tax structures.
- Market ranges, not guarantees. Multiples and discounts are based on common micro-acquisition ranges, but actual offers will depend on your specific niche, buyer pool, and market conditions.
- Not legal, tax, or investment advice. Use the result as an educational starting point, then speak with a qualified accountant, business broker, or M&A advisor before signing any sale agreement.
Because of these small business sale assumptions, treat the calculator’s output as a negotiation anchor rather than a precise price.
How to use a small business valuation estimate versus a professional valuation
Use this small business valuation calculator when you are:
- Exploring the idea of selling a side hustle or micro business.
- Comparing scenarios (for example, grow for another year vs. sell now).
- Benchmarking your business against common market multiples.
Consider a formal valuation or professional advice when:
- Business value is a major part of your net worth or retirement plan.
- There are multiple partners, investors, or family members involved.
- You need a value for legal, tax, financing, or regulatory purposes.
Small business valuation FAQ
What is seller’s discretionary earnings? Seller’s discretionary earnings (SDE) is the total financial benefit that a single owner-operator receives from the business in a year, including salary, perks, and profit. It adjusts your financials to show what a hands-on owner can realistically take home.
What multiple do small businesses usually sell for? Many small, owner-operated businesses sell in the 1.5× to 4× SDE range. Recurring revenue, strong documentation, low churn, and diversified customers support higher multiples, while heavy owner dependence or platform risk pull them lower.
How accurate is this valuation for a side hustle? For simple, owner-run businesses with clean books, the calculator can get you into a reasonable range. However, actual offers will vary, and buyers may place more weight on strategic fit, perceived risk, or their own financing constraints.
Arcade Mini-Game: Small Business Valuation Calculator Calibration Run
Use this quick arcade run to practice separating useful scenario inputs from common planning mistakes before you rely on the calculator output.
Start the game, then use your pointer or arrow keys to catch useful inputs and avoid bad assumptions.
Status messages will appear here.