Tax year 2026
Equity Tax Lab
Stock compensation tax calculators and plain-English guides for U.S. taxpayers.
Calculator shortcuts
Calculator
RSU Tax Calculator
Estimate federal taxable income and supplemental withholding for restricted stock units vesting in tax year 2026.
Calculator
ISO AMT Calculator
Estimate the ISO bargain element that may be an alternative minimum tax preference item.
Calculator
NSO Tax Calculator
Estimate ordinary income from a nonstatutory stock option exercise and default supplemental withholding.
Calculator
Capital Gains Tax Calculator
Estimate capital gain or loss and classify the holding period for stock compensation shares.
Calculator
83(b) Election Deadline Calculator
Calculate the 30-day filing deadline for a Section 83(b) election after restricted property transfer.
Methodology
Built for transparent tax estimates
- Every calculator separates inputs, assumptions, exclusions, and official source links.
- Each guide shows tax year, last updated date, review status, and a federal-only scope note.
- Inputs run in the browser and are not stored by Equity Tax Lab.
- Source-checked pages are not marked expert-reviewed unless an external professional is named.
Guides
Guide
RSU Tax Guide for 2026
How RSUs are taxed at vest, what supplemental withholding means, and how capital gains can arise later.
Guide
NSO Tax Guide for 2026
How nonstatutory stock options are generally taxed at exercise, what Form W-2 reporting can mean, and how a later sale is separate.
Guide
ISO AMT Guide for 2026
How incentive stock option exercises can create an AMT preference item and what to estimate before exercising.
Guide
ESPP Tax Guide for 2026
How employee stock purchase plan shares can create ordinary income and capital gain or loss when sold.
Guide
Stock Compensation Capital Gains Guide for 2026
How holding period, basis, sale proceeds, and prior wage income interact when stock compensation shares are sold.
Guide
83(b) Election Guide
What a Section 83(b) election is, why the 30-day deadline matters, and what this site does not decide for you.