Financial Glossary
Shareholder Basis
Shareholder basis is the measure of a shareholder's investment in a corporation for tax purposes, used to determine the taxability of distributions and the deductibility of pass-through losses. In an S corporation, basis starts with capital contributed, increases with income and additional contributions, and decreases with distributions, losses, and deductions. It is tracked separately by each shareholder and is critical for correctly reporting items from a Schedule K-1.
Problem & Application
S corporation owners, including many STR and hospitality operators who elect S-corp status, can only deduct losses up to their basis and take distributions tax-free up to that amount. Failing to track basis is a frequent reason owners face unexpected tax on distributions or have losses disallowed in an audit. Because basis changes every year, it must be maintained continuously rather than reconstructed at filing time.
In Short
Shareholder basis governs how much you can deduct and distribute without triggering tax. Keeping an accurate, year-over-year basis schedule protects those benefits.