Estimate the after-tax value of shares bought through an employee stock purchase plan. The calculator converts payroll contributions into shares using the entered discount, separates the purchase discount from later appreciation, and applies tax rates you provide to each component.
The main result is estimated sale value after the two modeled taxes. After-tax profit also subtracts the original contribution.
Actual ESPP tax treatment depends on holding period, plan terms, basis reporting, and jurisdiction. Fractional-share availability may differ.
A $10,000 contribution, $50 market price, 15% discount, and $60 sale price buys about 235.29 shares. At 32% tax on the discount and 20% on appreciation, modeled after-tax sale value is about $13,082.35.
No. Use the tax-rate input as a planning assumption; actual withholding and final liability can differ.
Yes, where a growth field is provided, but the rate must remain above negative 100 percent.
The math can use fractional shares. Your employer plan or broker may restrict actual purchases or sales to whole shares.
No. The calculator uses the single price or constant growth assumption you enter and does not simulate volatility.
No. It is an educational estimate; confirm option, RSU, or ESPP treatment with a qualified tax professional.
| Variable | Meaning | Unit |
|---|---|---|
| Plan contribution | Cash used for the purchase. | USD |
| Market price at purchase | Reference market price. | USD |
| Purchase discount | Discount from market price. | % |
| Sale price | Price received per share. | USD |
| Tax rate on discount | Rate applied to modeled discount income. | % |
| Tax rate on appreciation | Rate applied above purchase-date market price. | % |