Section 743(b) and Section 734(b) both adjust a partnership’s inside basis in its property, but they answer different problems. Section 743(b) fires when a partnership interest changes hands by sale, exchange, or death, and the adjustment belongs only to the incoming partner. Section 734(b) fires when the partnership distributes cash or property to a partner, and the adjustment changes the basis of the partnership’s remaining assets for every partner who stays. Both provisions require a Section 754 election unless a mandatory trigger applies, and once that election is on the books it stays on for every future transfer and every future distribution.
Why the Adjustments Exist
A partnership tracks value at two levels. Outside basis is what an individual partner has invested for tax purposes, moving up with contributions and allocated income and down with distributions and allocated losses. Inside basis is what the partnership itself carries in each asset, and it drives depreciation, amortization, and gain or loss when the partnership sells property.
These numbers routinely fall out of sync. A new partner might pay $500,000 for a 25% stake in a partnership whose total asset basis is $1.2 million. Their share of inside basis is $300,000, but their outside basis is $500,000. Without a correction, the partnership would eventually allocate $200,000 of “gain” to the new partner on appreciation that happened before they arrived. Sections 743(b) and 734(b) close that kind of gap. They just do it in response to different events.
Section 743(b): When a Partnership Interest Is Transferred
Section 743(b) applies when a partnership interest is transferred by sale, exchange, or on the death of a partner. If a valid Section 754 election is in place (or a substantial built-in loss exists), the partnership adjusts the basis of its property with respect to the new partner only. The adjustment equals the difference between the transferee’s outside basis and their proportionate share of the partnership’s inside basis in all assets.1Office of the Law Revision Counsel. 26 USC 743 – Special Rules Where Section 754 Election or Substantial Built-In Loss
If the price paid exceeds the buyer’s share of inside basis, the adjustment is positive, and the partnership records a basis increase in its assets for the transferee’s tax calculations only. If the price is lower, the adjustment is negative, which reduces the transferee’s share of asset basis and can produce more taxable gain later. Negative adjustments show up in distressed sales or when a partner sells at a discount.
The adjustment is entirely partner-specific. Existing partners see no change to their depreciation schedules or gain calculations. The partnership essentially maintains a separate tax sub-account for the transferee, tracking their adjusted share of each asset independently for the life of that asset.
A Quick Example
A partnership owns a building with a tax basis of $400,000 and a fair market value of $1 million. A new partner buys a 50% interest for $500,000. Their share of the building’s inside basis is only $200,000. Under Section 743(b), the partnership records a $300,000 positive basis adjustment to the building for that partner alone. If the partnership later sells the building, the existing partner computes gain from the $200,000 basis, and the new partner uses a $500,000 basis. Same building, same sale, two tax outcomes. That is the point.
Death of a partner triggers the same mechanics with an added benefit. The deceased partner’s interest generally receives a basis step-up to fair market value under Section 1014, so the successor’s outside basis reflects the current value of the interest. The 743(b) adjustment then aligns the inside basis to match, which can produce significant depreciation and amortization deductions for the successor.2Office of the Law Revision Counsel. 26 US Code 743 – Special Rules Where Section 754 Election or Substantial Built-In Loss
Section 734(b): When the Partnership Distributes Cash or Property
Section 734(b) addresses a different event. When the partnership distributes cash or property to a partner, and a Section 754 election is in effect (or a substantial basis reduction exists), the partnership adjusts the basis of its remaining, undistributed assets.3Office of the Law Revision Counsel. 26 USC 734 – Adjustment to Basis of Undistributed Partnership Property Where Section 754 Election or Substantial Basis Reduction
This one is not partner-specific. It changes the common basis of the partnership’s remaining assets, so every continuing partner shares in the benefit or the burden. The adjustment preserves the total tax basis that should exist within the partnership after assets leave through a distribution.
Upward Adjustments
A positive 734(b) adjustment happens in two situations. First, when a partner receives a cash distribution exceeding their outside basis and recognizes a capital gain under Section 731(a)(1). The partnership then increases its remaining asset basis by the amount of that recognized gain.4Office of the Law Revision Counsel. 26 US Code 731 – Extent of Recognition of Gain or Loss on Distribution Without this adjustment, the remaining partners would eventually pay tax on value that already got taxed to the departing partner.
Second, when the partnership distributes property and the recipient’s basis in that property, limited by their outside basis under Section 732, is less than what the partnership carried. If the partnership’s basis in a piece of equipment was $80,000 but the partner can only take a $50,000 basis, $30,000 of basis would vanish. Section 734(b) lets the partnership add that $30,000 to its remaining assets, keeping the total basis pool intact.
Downward Adjustments
Negative 734(b) adjustments arise when a partner recognizes a loss on a liquidating distribution (receiving only cash, inventory, and unrealized receivables worth less than their outside basis), or when distributed property takes a higher basis in the partner’s hands than it had in the partnership. In those cases, the partnership decreases the basis of its remaining assets. That prevents basis from being created out of thin air, which is the same preservation logic in reverse.
Side-by-Side Differences
- Trigger. Section 743(b) fires on a transfer of a partnership interest (sale, exchange, or death). Section 734(b) fires on a distribution of cash or property to a partner.
- Who is affected. A 743(b) adjustment applies only to the transferee partner. A 734(b) adjustment changes the common basis of the partnership’s remaining assets, affecting all continuing partners.
- What is adjusted. Section 743(b) adjusts basis in the partnership’s existing property with respect to the new partner. Section 734(b) adjusts basis in the property the partnership still holds after the distribution.
- Direction. Both can be positive or negative. A 743(b) step-up is common in appreciated-asset partnerships; a step-down appears when interests sell at a discount. A 734(b) increase preserves basis after gain-triggering or basis-limited distributions; a decrease prevents basis from being manufactured.
- Mandatory threshold. Section 743(b) is mandatory when the partnership has a substantial built-in loss (over $250,000). Section 734(b) is mandatory when there is a substantial basis reduction (also over $250,000).
- Election. Both otherwise require a Section 754 election. That single election activates both provisions at once.
The Section 754 Election That Turns Both On
Outside the mandatory scenarios, both 743(b) and 734(b) adjustments require a valid Section 754 election. The election is made by attaching a written statement to a timely filed Form 1065 for the tax year in which the triggering transfer or distribution occurred; a filing extension counts as timely.5Internal Revenue Service. FAQs for Internal Revenue Code (IRC) Sec. 754 Election and Revocation
The statement must include the name and address of the partnership and a declaration that the partnership elects under Section 754 to apply the provisions of Sections 734(b) and 743(b). There is no pre-printed IRS form for the election itself. Under final regulations (TD 9963), the older signature requirement has been eliminated for tax years ending on or after August 5, 2022, so the statement no longer needs a partner’s signature.6eCFR. 26 CFR 1.754-1 – Time and Manner of Making Election to Adjust Basis of Partnership Property
LLCs taxed as partnerships follow the same rules. If a multi-member LLC has elected or defaulted into partnership tax treatment, Sections 743(b), 734(b), and 754 all apply the same way.
When Adjustments Are Mandatory Without an Election
Two carve-outs force the adjustment regardless of whether a 754 election exists. On the transfer side, a partnership must make the 743(b) adjustment if it has a substantial built-in loss, which exists when either the partnership’s total basis in its property exceeds fair market value by more than $250,000, or the transferee partner would be allocated a loss over $250,000 if all partnership assets were sold at fair market value immediately after the transfer.1Office of the Law Revision Counsel. 26 USC 743 – Special Rules Where Section 754 Election or Substantial Built-In Loss
On the distribution side, the partnership must make the 734(b) adjustment when a substantial basis reduction exists, meaning the sum of any loss recognized by the distributee plus any excess of the distributee’s basis in distributed property over the partnership’s basis in that property exceeds $250,000. Securitization partnerships are expressly exempt from that rule.3Office of the Law Revision Counsel. 26 USC 734 – Adjustment to Basis of Undistributed Partnership Property Where Section 754 Election or Substantial Basis Reduction
Missing the Deadline
If the partnership fails to file the election with a timely return, it can claim an automatic 12-month extension under Treasury Regulation Section 301.9100-2. The fix is to file an original or amended return with the election statement attached within 12 months of the original due date, including extensions.7eCFR. 26 CFR 301.9100-2 – Automatic Extensions Past that window, the partnership can still request relief under Section 301.9100-3, but approval is discretionary.
The Permanence Trade-Off
A Section 754 election is not a one-time decision. Once it is in effect, it applies to every future transfer of a partnership interest and every future distribution of property for as long as the partnership exists. Every buyout, every redemption, every property distribution triggers the adjustment machinery, and the partnership has to track it all.
Revoking the election requires filing Form 15254 and getting IRS approval. The IRS will consider revocation when the election creates an administrative burden due to circumstances like a change in the nature of the partnership’s business, a substantial increase in partnership assets, a shift in asset character, or increased frequency of partner retirements or ownership changes. The IRS will not approve a revocation whose primary purpose is to avoid a downward basis adjustment on a future transfer or distribution.8Internal Revenue Service. About Form 15254, Request for Section 754 Revocation
That permanence is the reason many partnerships hesitate to elect. In a two-partner firm where one is buying out the other, the math is clean and the benefit is obvious. In a fund with frequent turnover, the cost of maintaining separate 743(b) sub-accounts for every incoming partner adds up, and a single discounted sale can produce a negative adjustment that wipes out years of depreciation benefits for a later buyer. Before filing, check the partnership agreement too: some agreements require a majority or unanimous vote before a 754 election can be made, because the election creates permanent accounting obligations and can produce negative adjustments that hurt other partners down the road.