The amount reported on K-1 line 13W as portfolio deductions is not deductible on your individual federal return. It represents investment-related expenses, such as advisory and custodial fees, that a partnership incurred managing assets producing interest, dividends, royalties, or capital gains, and that the entity passed through to you for informational purposes. The Tax Cuts and Jobs Act suspended miscellaneous itemized deductions beginning in 2018, and the One Big Beautiful Bill Act removed the 2025 sunset, so the suspension is now permanent.1Office of the Law Revision Counsel. 26 USC 67 – 2-Percent Floor on Miscellaneous Itemized Deductions The dollar amount on your K-1 is real, but it carries no federal tax benefit.
What the 13W Amount Represents
Line 13W on a partnership Schedule K-1 (Form 1065) reports the partner’s share of expenses the partnership paid to produce or manage investment income. Typical items include investment advisory fees, custodial fees, and accounting or legal costs tied directly to the entity’s investment portfolio. Their statutory basis is Section 212 of the Internal Revenue Code, which allows deductions for ordinary and necessary expenses paid to produce or collect income, or to manage and maintain income-producing property.2Office of the Law Revision Counsel. 26 USC 212 – Expenses for Production of Income
The partnership itself does not deduct these costs against its own income. It passes them through on the K-1 so each partner can evaluate the deductibility on their personal return. The IRS periodically reassigns code letters within Box 13, so what has long been called “13W” may appear under a different letter on a given year’s form. The S corporation equivalent is Box 12, Code L on Form 1120-S, labeled “Deductions—portfolio income (other).”3Internal Revenue Service. Instructions for Schedule K-1 (Form 1120-S) Wherever the number sits on your K-1, the federal treatment is identical.
Why You Can’t Deduct It
Portfolio expenses fall within the statutory definition of miscellaneous itemized deductions. Section 67 defines that category as essentially all itemized deductions except a specific list of carve-outs: mortgage interest, state and local taxes, charitable contributions, medical expenses, casualty losses, and a few others. Investment advisory fees and similar portfolio costs are not on that exclusion list.1Office of the Law Revision Counsel. 26 USC 67 – 2-Percent Floor on Miscellaneous Itemized Deductions
Before 2018, these deductions were allowed to the extent they exceeded 2% of adjusted gross income. The Tax Cuts and Jobs Act eliminated them entirely starting in 2018, originally through 2025.4Internal Revenue Service. Publication 529 – Miscellaneous Deductions The One Big Beautiful Bill Act then stripped the sunset. The statute now bars any miscellaneous itemized deduction for tax years beginning after December 31, 2017, with no end date.1Office of the Law Revision Counsel. 26 USC 67 – 2-Percent Floor on Miscellaneous Itemized Deductions Many investors had been expecting 2026 to restore the old rules. It will not, unless Congress acts again.
What To Do With the Number When You File
Even though the deduction is disallowed, you still need to account for the K-1 amount. The IRS matches K-1 data against individual returns, and ignoring a reported item can draw a notice.
If you take the standard deduction, the 13W amount has no effect on your return. For 2026, the standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.5Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 If you itemize on Schedule A, the amount may need to be entered on the line for other itemized deductions depending on that year’s instructions, but the calculation zeroes it out. It appears for reconciliation only and does not reduce taxable income.
Keep your K-1 and any documentation of the underlying expenses. Organized records make it easier to reconstruct deductions if Congress ever reverses course, and the amounts can matter in related calculations such as the investment interest expense limitation on Form 4952.
Don’t Confuse It With Investment Interest Expense
Investment interest expense often appears alongside portfolio deductions on a K-1 and is treated completely differently. On an S corporation K-1 it shows up as Box 12, Code H; on a partnership K-1 it is reported separately from the 13W line.3Internal Revenue Service. Instructions for Schedule K-1 (Form 1120-S) Investment interest expense falls under Section 163, which Section 67 specifically excludes from the miscellaneous category.1Office of the Law Revision Counsel. 26 USC 67 – 2-Percent Floor on Miscellaneous Itemized Deductions You report it on Form 4952, and it remains deductible up to the amount of your net investment income. The permanent suspension does not touch it. If your K-1 shows both, treat them as separate items.
Narrow Exceptions That Probably Don’t Apply to You
Two groups of expenses escaped the suspension, and neither helps the typical investor holding a partnership or S corporation interest.
The first is costs incurred by estates and trusts that would not have been incurred if the property were not held in a fiduciary arrangement. Section 67(e) treats those administration costs as something other than miscellaneous itemized deductions, so the suspension does not reach them.1Office of the Law Revision Counsel. 26 USC 67 – 2-Percent Floor on Miscellaneous Itemized Deductions A trustee’s administration fee generally qualifies; an investment advisory fee that anyone could incur generally does not. When a trust or estate terminates, excess deductions pass through to beneficiaries on a Form 1041 K-1 and keep their character on the beneficiary’s return.6Internal Revenue Service. Instructions for Schedule K-1 (Form 1041) for a Beneficiary Filing Form 1040 or 1040-SR This exception applies only when the entity itself is an estate or trust. A standard investment partnership K-1 does not qualify.
The second is impairment-related work expenses, costs a person with a disability incurs to be able to work. These are explicitly excluded from the miscellaneous category.1Office of the Law Revision Counsel. 26 USC 67 – 2-Percent Floor on Miscellaneous Itemized Deductions They relate to employment rather than investment management, so they almost never appear on an investment K-1.
State Returns May Still Allow It
Federal law controls your federal return, but state income tax rules do not always follow federal changes. Some states never adopted the TCJA suspension and continue to allow miscellaneous itemized deductions, typically subject to the original 2% AGI floor. Check whether your state conforms to current federal treatment or keeps its own rules. The 13W amount that produces zero federal benefit may still reduce your state taxable income.