Schedule K-1 Items L and K: Capital Accounts and Liabilities

Item L is a roll forward, per partner

Beginning capital, plus contributions, plus the partner's share of income, less their share of losses, less withdrawals and distributions, equals ending capital.

Two agreements have to hold. Each partner's roll forward has to be internally consistent, and the total of all the partners' ending capital has to equal Schedule L line 21. The IRS position is also that Schedule M-2 equals the total of the item L amounts across all partners.

When those fail, the cause is usually one of three things: income allocated other than per the partnership agreement, draws posted to an expense account instead of equity, or a conversion between book and tax basis applied to some partners and not others.

Tax basis, not book basis

Item L asks for capital accounts on a tax basis. Books kept on a book, GAAP or section 704(b) basis are not what the K-1 wants, and the conversion is not optional.

The differences come from the familiar places: depreciation computed differently for book and tax, nondeductible expenses, and syndication costs. A partnership whose books track GAAP capital needs a separate tax basis computation per partner, which the balance sheet cannot provide on its own.

Item K is where the basis comes from

Each partner's share of recourse, qualified nonrecourse and nonrecourse liabilities. That allocation matters because a partner's outside basis includes their share of partnership debt, and outside basis is what limits deductible losses.

The distinction is economic rather than cosmetic. Recourse means the partner bears the economic risk of loss. Nonrecourse means nobody does. Qualified nonrecourse financing, generally real property debt, has its own treatment for the at risk rules.

Classifying a bank loan the partners personally guaranteed as nonrecourse, or leaving it off item K entirely, produces K-1s that misstate basis, and the partner's own return is where the consequence lands.

Negative capital accounts

A capital account can go negative when losses and withdrawals exceed contributions and allocated income. That is not automatically an error, because debt allocated to a partner supports deductions beyond their contributed capital.

It is a signal to look, though. A negative tax basis capital account generally means deductions have outrun contributed capital, and item K is where the support for that has to come from. It also matters on a sale or liquidation, where a negative account usually produces gain.

S corporations work differently

An 1120-S K-1 has no capital account analysis. Items affecting shareholder basis are reported in box 16, including distributions at code D and nondeductible expenses, and the shareholder tracks their own basis on Form 7203.

The practical difference: a partnership reports the capital roll forward on the K-1, while an S corporation shareholder has to build the basis computation themselves from the items the K-1 reports.