To calculate it, start with your initial basis (cash you contributed plus the adjusted basis of any property you contributed, plus your share of partnership liabilities) and then make annual adjustments.
- Increase the basis for additional contributions, your share of partnership taxable income and tax-exempt income, and any increase in your share of liabilities.
- Decrease the basis for cash or property distributions made to you, your share of partnership losses and nondeductible expenses, and any decreases in your share of liabilities.