Partner Buyout Calculator — United States

How a Partner Buyout Price Is Calculated

A partner buyout price starts with the fair market value of the entire business, multiplied by the departing partner's ownership percentage, and then adjusted downward for two standard valuation discounts: the minority interest discount and the discount for lack of marketability (DLOM). This calculator applies exactly that sequence, then amortizes the result into monthly payments if the buyout is paid over time — the way most small-business buyouts across United States are actually structured.

The minority interest discount reflects the reality that a non-controlling stake is worth less per share than a controlling one: a 30% partner cannot set salaries, declare distributions, or force a sale. Courts and valuators typically apply 10–30% for minority positions. The marketability discount reflects that private-company shares cannot be sold on an exchange; studies of restricted-stock transactions support discounts of roughly 5–25% depending on the company's size, profitability, and transfer restrictions. In the United States, buyout structure matters for tax: a cross-purchase generally gives the buyer a stepped-up basis, while a redemption by the company may be treated as a dividend for the seller under IRC §302 unless it fully terminates their interest.

Worked example

Suppose a business is appraised at $1,000,000 and the departing partner owns 30%. The pro-rata share is $300,000. Applying a 15% minority discount leaves $255,000; a further 10% marketability discount brings the buyout price to $229,500. Paid over 5 years at 6% interest, that is a monthly payment of about $4,437, or roughly $266,200 in total including interest. Compare that against a lump sum: the remaining partners pay less overall with cash at closing, but a note preserves working capital — check your position with our working capital calculator.

Where the business value number comes from

• Formal appraisal — the gold standard for contested buyouts and buy-sell agreement triggers.
• EBITDA multiple — the most common shortcut for small and mid-size companies; run it with our business valuation calculator.
• Formula in the partnership agreement — many agreements fix a formula (e.g., 4× average earnings) that overrides fair market value entirely.

Common buyout triggers and how they're funded

Most buyouts are triggered by one of five events — retirement, death, disability, divorce, or deadlock — and well-drafted buy-sell agreements assign a valuation mechanism to each. Funding follows a predictable menu: life insurance funds death buyouts at pennies on the dollar of coverage; seller financing (the promissory-note structure this calculator models) dominates retirements because banks are reluctant to lend against goodwill; company redemptions use corporate cash to retire the shares, changing the tax character of the deal; and bank term loans appear mainly where hard assets secure the debt. The remaining partners should also stress-test the payment schedule against cash flow — a buyout note that consumes more than 25–30% of annual free cash flow leaves the company fragile through a single bad year, which is precisely when disputes over missed payments turn into litigation.

Negotiation dynamics track the discounts. A departing 30% partner will argue the agreement implies a pro-rata value with no discounts; the remaining partners will cite valuation practice supporting 20–40% combined discounts. Where the number lands usually depends on who wants the exit more, whether a non-compete accompanies the sale, and what the agreement actually says — which is why the pro-rata and discounted figures above are best treated as the negotiating range rather than a single answer.

When to Get Professional Advice

Use this tool for planning and negotiation framing, not as a final price. Get a professional valuation and legal review whenever the partnership agreement is silent or ambiguous on valuation method, whenever discounts are disputed (a departing partner will argue for zero discounts; buyers will argue for maximum), when the buyout is triggered by death, disability, or shareholder oppression, or when tax structuring could change the after-tax result by five figures or more. A accredited business appraiser (ABV or ASA) plus a business lawyer typically costs a fraction of what a mispriced buyout costs. If your firm advises on buyouts, LexScale.ai helps business law firms across North America capture this exact search demand — see our interactive legal wizards for more client-facing tools.