Secondary Sale Proceeds Calculator

Background.

A reader arrives at Secondary Sale Proceeds Calculator to estimate net employee or founder proceeds after fees and tax on positive per-share gain. A secondary sale transfers existing shares rather than issuing primary capital to the company. For that reason, this page names its convention as “net secondary proceeds = shares x price - entered transaction fees - entered tax rate x positive per-share gain.”

The editable entries are shares sold in secondary transaction, secondary sale price per share, transaction fees, entered estimated tax rate on gain or proceeds proxy, entered tax basis per share. Use values from the document or measurement that governs this secondary sale proceeds question; the defaults are only the worked fixture below. Before relying on the number, check this secondary sale proceeds boundary: company consent, right of first refusal, securities-law restrictions, basis lot, holding period and withholding must be checked.

U.S. SEC Investor.gov, Stocks; shares, market value and corporate actions documents the convention or governing rule used here. The secondary sale proceeds output is a transparent scenario under those facts: it does not manufacture an unentered market price, professional determination, carrier quote, legal eligibility finding or locally adopted code value.

What is secondary sale proceeds calculator?

Secondary Sale Proceeds is the relationship behind this decision: a secondary sale transfers existing shares rather than issuing primary capital to the company. On this page it means net secondary proceeds = shares x price - entered transaction fees - entered tax rate x positive per-share gain. Company consent, right of first refusal, securities-law restrictions, basis lot, holding period and withholding must be checked; that is the line between the reported quantity and a broader corporate finance analysis.

How to use this calculator.

1. 01Confirm that “net secondary proceeds = shares x price - entered transaction fees - entered tax rate x positive per-share gain” matches the secondary sale proceeds convention you need.
2. 02Replace the fixture values for shares sold in secondary transaction, secondary sale price per share, transaction fees, entered estimated tax rate on gain or proceeds proxy, entered tax basis per share with dated values from the governing record.
3. 03Keep all currencies, measurement units and time periods on the same basis before calculating.
4. 04Read estimated net secondary-sale proceeds together with this boundary: Company consent, right of first refusal, securities-law restrictions, basis lot, holding period and withholding must be checked.

The formula.

The calculation uses net secondary proceeds = shares x price - entered transaction fees - entered tax rate x positive per-share gain. In this secondary sale proceeds model, the entered terms are shares sold in secondary transaction, secondary sale price per share, transaction fees, entered estimated tax rate on gain or proceeds proxy, entered tax basis per share. A secondary sale transfers existing shares rather than issuing primary capital to the company, which is why the relationship is presented under this name rather than as a universal alternative. Company consent, right of first refusal, securities-law restrictions, basis lot, holding period and withholding must be checked. Calculations keep full decimal precision through the relationship and round only the returned display values.

A worked example.

Frequently asked questions.

References& sources.

1. [1]U.S. SEC Investor.gov, Stocks; shares, market value and corporate actions. Retrieved 2026-08-07. access: open unless marked otherwise.
2. [2]U.S. Securities and Exchange Commission. Investor.gov glossary: Dilution. Retrieved 2026-08-07. independence: primary; access: open.
3. [3]U.S. Internal Revenue Service. Topic no. 409, Capital gains and losses. Retrieved 2026-08-07. independence: primary; access: open.