Federal Section 754 Partnership Inside-Basis Step-Up Calculator

How this calculator works

Section 754 of the Internal Revenue Code permits a partnership — including any LLC taxed as a partnership — to elect, in writing, to adjust the inside basis of its property when a partnership interest is transferred (governed by IRC § 743(b)) or when the partnership distributes property to a partner (governed by IRC § 734(b)). Without the election, the partnership keeps its historical inside basis for the transferee even though the transferee has stepped up their outside basis through a purchase or a § 1014 death-step-up. The result is a permanent disconnect — the transferee's outside basis reflects current value, but the partnership keeps depreciating the underlying property on its lower historical basis.

This calculator runs the § 743(b) adjustment math, allocates the result across asset classes under IRC § 755, applies the IRC § 743(d) mandatory rule when a step-down magnitude exceeds the $250,000 substantial-built-in-loss threshold, and computes the present value of the accelerated depreciation tax savings the transferee captures over the remaining recovery period of the property.

A brief history of § 754

The § 754 election was added to the Code in 1954 to address a basic mechanical problem the partnership tax rules had inherited from the 1939 Code: a partner could be allocated income on a partnership interest whose basis bore no relationship to the underlying property. The 1954 reform introduced the inside-basis adjustment mechanism — at the partner level only, not partnership-wide — so that a transferee partner could realign their share of the partnership's basis with their outside basis without disturbing the other partners' tax accounting.

The election has stayed substantively stable ever since, with two material refinements. The Pension Protection Act of 2006 codified the mandatory § 743(d) adjustment for substantial built-in loss situations exceeding $250,000, closing a loss-trafficking loophole that had let high-basis partners transfer interests without an election while leaving the loss locked inside the partnership where it could later be allocated to other partners. The Tax Cuts and Jobs Act of 2017 added a partner-level prong to the § 743(d) test under § 743(d)(1)(B), capturing situations where the transferee would be allocated a loss of more than $250,000 on a hypothetical full-FMV sale of all partnership property immediately after the transfer.

Inside basis versus outside basis

OUTSIDE BASIS is the partner's basis in the partnership INTEREST. It moves up with capital contributions and allocated income, down with distributions and allocated losses, and is reset to FMV at death under IRC § 1014. INSIDE BASIS is the partnership's basis in its PROPERTY — the real estate, equipment, cash, receivables, and intangibles the partnership owns. The two are linked at formation: when a partner contributes property, the partnership's inside basis equals the partner's outside basis. They diverge over time, and they diverge dramatically when a partnership interest is transferred without a § 754 election.

The disconnect matters most in real-estate-fund LLCs. A member who joined a real-estate fund years ago has typically seen sharp depreciation reduce the partnership's inside basis below current FMV. When that member dies, the heirs' outside basis is reset to FMV under § 1014 — but the partnership's inside basis in the underlying real estate stays at the historical level. Without § 754, the heirs are stuck depreciating the property on the partnership's lower basis. With § 754, a § 743(b) adjustment lifts the heirs' share of inside basis up to FMV, and the step-up rides on the heirs' Schedule K-1 as accelerated depreciation through the remaining recovery period.

The § 743(b) adjustment math

The § 743(b) adjustment equals:

• Transferee's outside basis MINUS
• Transferee's proportionate share of the partnership's adjusted inside basis.

A POSITIVE adjustment is a STEP-UP — the transferee's share of inside basis is raised by the adjustment amount, and the transferee receives accelerated depreciation deductions on the step-up portion over the remaining recovery period of the underlying property. A NEGATIVE adjustment is a STEP-DOWN — the transferee's share of inside basis is reduced, and the transferee loses depreciation deductions (or recognizes additional gain on a future sale of the underlying property).

The adjustment is fundamentally TRANSFEREE-SPECIFIC. It affects only the transferee partner's share of inside basis, not the other partners' shares. The partnership maintains two depreciation schedules in its records: one at the historical inside basis for the continuing partners, and one at the adjusted inside basis for the transferee. This two-track accounting is administratively burdensome but is the mechanical feature that makes the election workable — the partnership does not have to re-allocate inside basis across all partners every time one partner is replaced.

The IRC § 734(b) adjustment for distributions

IRC § 734(b) is the other half of the § 754 scope. When a partnership makes a distribution to a partner and the distribution would trigger gain or loss to that partner, the § 754 election causes the partnership to adjust its inside basis to reflect the partner-level recognition. A common pattern: a partnership distributes cash to a redeeming partner in excess of that partner's outside basis. The redeeming partner recognizes gain on the excess, and the § 734(b) adjustment lifts the partnership's inside basis in its remaining property by the recognized gain amount. The continuing partners then have a higher inside basis to depreciate against.

§ 734(b) has its own mandatory rule under § 734(d), triggered when the partnership recognizes a substantial loss exceeding $250,000 on a distribution. This calculator focuses on § 743(b) because the transfer-of-interest scenario is the higher-volume use case in real-estate-fund and operating-business LLCs; the § 734(b) mechanics are conceptually similar but apply at the partnership level rather than the partner level.

The mandatory § 743(d) rule

IRC § 743(d) makes a § 743(b) adjustment MANDATORY — without a § 754 election, and regardless of whether the partnership wants the adjustment — when the partnership has a "substantial built-in loss" with respect to the transfer. After TCJA 2017, the test has two prongs, of which either one triggers the rule:

1. The partnership's adjusted basis in its property exceeds FMV by more than $250,000 immediately after the transfer.

2. The transferee would be allocated a loss of more than $250,000 if the partnership sold all its assets in a fully-taxable transaction at FMV immediately after the transfer (the partner-level test added by TCJA 2017).

The mandatory rule prevents abuse. Without it, a partnership could let a partner with a high outside basis — for example, a corporation that bought in near the top of the market — transfer their interest without the § 754 election, leaving the built-in loss locked inside the partnership where it could later be allocated to other partners. The $250,000 threshold is statutory and is not indexed for inflation; it has been the figure since the Pension Protection Act of 2006 codified the mandatory rule.

§ 755 allocation across asset classes

IRC § 755 and Treas. Reg. § 1.755-1 govern the allocation of the § 743(b) adjustment across the partnership's property classes. The standard method is the "residual method." The partnership's assets are grouped into classes — cash, marketable securities, accounts receivable, inventory, § 1245 personal property, § 1231 / § 1250 real property, goodwill, and other intangibles — and the § 743(b) adjustment is allocated within each class in proportion to the unrealized appreciation (for a step-up) or depreciation (for a step-down).

For a step-up, the calculator approximates the residual method with a single user-supplied "recapture-laden share" that allocates first to § 1245 personal property (vehicles, equipment, furniture, machinery), with the remainder going to § 1231 / § 1250 real property. For a pure real-estate fund the recapture-laden share is typically zero — the entire adjustment lands on the depreciable real-property class and rides as accelerated depreciation. For an operating-business LLC with significant personal property, the share might run 0.2 to 0.4, and the personal-property portion is recovered over a 5-7 year MACRS life instead of 27.5-39 years.

Interaction with § 1014 death-step-up

IRC § 1014 gives the heirs of a deceased partner an outside basis equal to the FMV of the partnership interest at the date of death (or the alternate valuation date six months later if the executor elects). This is typically the LARGEST § 743(b) step-up trigger in real-estate-fund LLCs. A member who has held the interest for years has typically seen sharp depreciation reduce the partnership's inside basis below FMV, and the death-step-up under § 1014 lifts the heirs' outside basis to current FMV.

Without a § 754 election in place, the heirs see NO benefit from the § 1014 step-up at the partnership level. The partnership keeps depreciating on its historical inside basis, and the heirs are stuck with a high outside basis with nothing to ride on. The disconnect typically surfaces when the heirs see their first Schedule K-1 and discover the partnership's depreciation is unchanged from the pre-death allocation. With a § 754 election filed for the year of death, the heirs receive a § 743(b) step-up equal to the difference between their FMV outside basis and their proportionate share of the partnership's historical inside basis. The step-up is allocated across the partnership's real-property class under § 755, and rides on the heirs' Schedule K-1 as accelerated depreciation over the remaining recovery period.

The professional pattern in fund-LLC operating agreements is to include a "§ 754 election upon death" provision that commits the partnership to make the election whenever a member dies. This protects the heirs from the partnership-level decision of whether to make the election; the operating agreement obligates the partnership to file it.

Election mechanics under Treas. Reg. § 1.754-1

The § 754 election is made by attaching a written statement to a TIMELY-FILED partnership return (Form 1065), including any filing extension, for the taxable year of the transfer or distribution. The statement must (1) identify the partnership by name and EIN, (2) declare the § 754 election under the applicable statute citation, and (3) be signed by a partner. The election is effective automatically once the statement is attached and the return is filed timely; no IRS approval is required.

Once made, the election BINDS future years. It applies to ALL future § 743(b) and § 734(b) events at the partnership until formally revoked. Revocation requires IRS consent under Treas. Reg. § 1.754-1(c), and consent is granted sparingly — typically only on a showing of substantial administrative burden, change in the nature of the partnership, or change in accounting method. In practice, once a partnership has a § 754 election in effect, it usually stays in effect for the life of the partnership; the burden of maintaining two-track depreciation schedules is usually less than the cost of giving up the future step-ups.

A late election cannot be filed without IRS relief. The available relief is under Rev. Proc. 2009-41 (automatic late-election relief for certain partnerships) or under Reg. § 301.9100 (the "9100 relief" procedure, which requires a showing of reasonable cause and good faith). Both relief avenues take months to process and are not guaranteed; the safe course is to file the election timely with the original return.

Form 1065 and Schedule K-1 reporting

The partnership reports the § 754 election by attaching the written election statement to the timely-filed Form 1065 for the year of the transfer. For an election already in effect, no further filing is required — the existing election continues to apply.

The § 743(b) adjustment itself is reported on the TRANSFEREE's Schedule K-1 in the supplemental information section. The current Schedule K-1 instructions use code V for a positive § 743(b) adjustment (step-up) and code W for a negative § 743(b) adjustment (step-down). The step-up depreciation is reported separately from the partnership's regular depreciation — the transferee's K-1 shows their share of the regular partnership depreciation PLUS the additional step-up depreciation that flows only to them. The continuing partners' K-1s show only their share of the regular partnership depreciation, with no step-up portion.

The partnership maintains two depreciation schedules in its records: one at the historical inside basis for the continuing partners, and one at the adjusted inside basis for the transferee. The transferee's schedule runs the step-up amount through the remaining recovery period of the underlying property — typically 27.5 years for § 1250 residential rental real estate, 39 years for nonresidential, or 5-7 years for § 1245 personal property under MACRS.

Partnership-level versus partner-level accounting

The § 743(b) adjustment is fundamentally a PARTNER-LEVEL adjustment. It affects only the transferee partner's share of inside basis, not the other partners' shares. This is the critical mechanical feature that makes the election workable. The partnership does not have to re-allocate inside basis across all partners every time one partner is replaced. Instead, the partnership runs its regular books on the historical inside basis (the "common partnership" basis), and layers a TRANSFEREE-SPECIFIC adjustment on top for the transferee only.

On any given Form 1065, the partnership reports its regular depreciation across all partners, and then reports each transferee's step-up depreciation as a separate line item on that transferee's Schedule K-1. The continuing partners see no change in their tax allocations from the § 754 election. Only the transferee sees the benefit. This is why the § 754 election can be made for the year of any transfer — the election is a partnership-level commitment to do the partner-level accounting, but the substantive impact is always partner-specific.

Worked example A: real-estate-fund member dies with § 754 in place

A member of a real-estate-fund LLC holds a 25% interest. The fund's partnership inside basis is $2,000,000 — net of accumulated depreciation on a $4,000,000 apartment building. The member dies; FMV of the partnership interest at the date of death is $1,500,000. The fund has a § 754 election in effect.

• Transferee's proportionate share of inside basis: $2,000,000 × 25% = $500,000.
• Transferee's outside basis: $1,500,000 (FMV under § 1014).
• § 743(b) adjustment: $1,500,000 − $500,000 = $1,000,000 step-up.
• § 755 allocation (0% recapture-laden): $1,000,000 to § 1231 / § 1250 real property.
• Annual step-up depreciation over 27.5 years: $1,000,000 / 27.5 ≈ $36,364.
• Annual tax savings at 37% marginal rate: $13,455.
• NPV at 6% discount over 27.5 years: approximately $179,000.

The heirs capture roughly $179,000 of present-value tax savings from the § 754 election. Without the election, the entire benefit is forfeited.

Worked example B: same facts, no § 754 election

Same fund, same death, same FMV. No § 754 election is in effect, and the partnership does not file one for the year of death.

• § 743(b) adjustment (informational): $1,000,000 step-up — does NOT apply.
• Allocation across classes: $0.
• Annual step-up depreciation: $0.
• NPV of step-up tax savings: $0.

The heirs receive nothing. The partnership keeps depreciating on its historical inside basis, and the heirs hold a partnership interest with $1,500,000 of outside basis but only $500,000 of inside basis backing it. The lost $179,000 of present-value tax savings is the cost of the missed election.

Worked example C: distressed sale triggers mandatory § 743(d)

A member of an operating-business LLC sells their 25% interest in a fire sale. The partnership inside basis is $2,000,000. The transferee buys in for $100,000.

• Transferee's proportionate share of inside basis: $500,000.
• Transferee's outside basis: $100,000.
• § 743(b) adjustment: $100,000 − $500,000 = -$400,000 step-down.
• § 743(d) mandatory test: $400,000 absolute value exceeds the $250,000 threshold — MANDATORY.
• Even without a § 754 election, the partnership MUST compute and report the step-down.

The mandatory rule reflects Congress's concern that without it, the built-in loss would stay locked in the partnership and be allocated to other partners over time — a backdoor loss-trafficking technique.

Worked example D: mixed-asset LLC with personal property

An operating-business LLC has $1,000,000 of unrealized appreciation, split $300,000 in § 1245 equipment and $700,000 in the § 1231 / § 1250 building. A new partner pays $1,500,000 for a 25% interest. The inside-basis share is $500,000. § 754 election in effect.

• § 743(b) adjustment: $1,500,000 − $500,000 = $1,000,000 step-up.
• § 755 allocation (30% recapture-laden): $300,000 to § 1245 and $700,000 to § 1231 / § 1250.
• § 1245 portion runs over a 5-7 year MACRS life — large near-term depreciation.
• § 1231 / § 1250 portion runs over 27.5 or 39 years — long-tail depreciation.

The § 1245 portion is recovered much faster than the real-property portion, which materially raises the NPV of the step-up. Mixed-asset partnerships with recapture-laden equipment are particularly attractive § 754 targets.

Common errors

The single most common error is FAILURE TO FILE the election with the timely-filed Form 1065 for the year of the transfer. The election cannot be filed late without IRS relief, and the relief is granted sparingly. The professional defensive move is to file the election proactively the first time a step-up event occurs, accepting that the election binds future years.

The second common error is INCORRECT ALLOCATION under § 755 — partnerships sometimes allocate the entire § 743(b) adjustment to the real-property class without considering the personal-property assets the partnership also holds. The residual method requires allocation across all classes in proportion to unrealized appreciation. A small allocation to § 1245 equipment can materially raise the NPV of the step-up because § 1245 property runs over a much shorter recovery period.

The third common error is FAILING TO TRACK two depreciation schedules. Partnerships sometimes lump the step-up depreciation in with the regular partnership depreciation, which over-allocates the step-up to the continuing partners and under-allocates it to the transferee. The two-track requirement is administratively burdensome but unavoidable.

The fourth is RELYING ON A § 754 ELECTION THAT WAS NEVER FILED. Partnerships sometimes assume an election is in effect because "everyone knows" they make the election, but on examination the IRS finds no written statement was ever attached to a return. Always verify the election statement is in the partnership's records — the first item any partnership-tax CPA should check on a transfer event.

The fifth is OVERLOOKING § 743(d) MANDATORY ADJUSTMENTS. Even without a § 754 election, a step-down exceeding $250,000 is mandatory. Partnerships that "don't have an election" sometimes assume no adjustment math applies, and then find themselves on the wrong end of an IRS examination that reconstructs the mandatory adjustment after the fact.

What this calculator does not do

This is a planning and screening tool. It does NOT substitute for a CPA or partnership-tax attorney engagement. The § 755 allocation in practice depends on the partnership's actual property mix and unrealized appreciation by asset class — the calculator uses a single user-supplied recapture-laden share as an approximation. The two-track depreciation accounting required after the election is non-trivial and requires a professional. The election itself must be drafted and attached to the partnership return; this calculator does not prepare the statement. State-level conformity questions are out of scope; some states do not follow the federal § 754 election. Lastly, the NPV computation is informational — it uses straight-line depreciation on the real-property portion and a user-supplied marginal rate and discount rate. The actual benefit depends on the transferee's bracket and the partnership's recovery schedule.

How this page is maintained

The § 754 framework has been substantively stable since 1954, with two material refinements (the 2006 codification of the mandatory § 743(d) rule and the 2017 partner-level prong). The election mechanics under Treas. Reg. § 1.754-1, the § 743(b) computation, and the § 755 allocation residual method have not changed. The $250,000 substantial-built-in-loss threshold has not been indexed for inflation and remains as enacted. We monitor IRS guidance for procedural updates and refresh the calculator after each material change.

Last reviewed: 2026-05-16 against IRC § 754 (election), IRC § 743(b) (transfer adjustment), IRC § 743(d) (mandatory adjustment on substantial built-in loss), IRC § 734(b) (distribution adjustment), IRC § 755 (allocation), IRC § 1014 (death-step-up trigger), IRC § 1245 (recapture-laden personal property), IRC § 1250 (recapture-laden real property), Treas. Reg. § 1.754-1 (election mechanics + revocation), Treas. Reg. § 1.743-1 (§ 743(b) regulations), Treas. Reg. § 1.755-1 (§ 755 allocation regulations), IRS Form 1065 (partnership return), IRS Schedule K-1 (Form 1065) (partner reporting — codes V and W), and the Tax Cuts and Jobs Act of 2017 (Pub. L. 115-97).