Boot Calculation Support

Boot is any part of the exchange that does not qualify for deferral, most often leftover cash or debt that was not replaced, and it rarely shows up as a single obvious number. A working ledger built alongside a Missouri exchange, whether the replacement is an industrial building near St. Louis or a rental portfolio around Columbia, keeps the boot conversation grounded in real figures instead of a rough guess at closing.

Building the Boot Ledger

Cash boot is the net cash the investor receives out of the exchange rather than reinvesting, while mortgage boot is a reduction in debt on the replacement property that is not offset by adding new cash into the deal. Both are tracked from the same starting point: the value and debt on the relinquished property compared line by line against the value and debt on the replacement property.

Because these figures move as financing terms are finalized, the ledger should be updated at least twice, once when a replacement candidate is identified and again just before the settlement statement is finalized.

Debt, Cash, and Value Line Items

A typical boot ledger tracks the following figures side by side for the relinquished and replacement sides of the exchange:

• sale price and payoff amount on the relinquished property
• purchase price and new loan amount on the replacement property
• exchange proceeds held by the qualified intermediary
• cash contributed by the investor toward the replacement purchase
• closing costs classified as exchange expenses or non-qualifying costs

Where Missouri Closings Introduce Boot

Boot tends to appear where debt terms differ between the sale and purchase sides, for instance when a St. Louis industrial building carried a larger loan than a Springfield retail replacement can support, or when prorations, reserves, and closing costs at a Columbia closing are treated inconsistently across the two transactions. Farmland transactions can also introduce boot when equipment or personal property is bundled into the sale price without being separated out.

A downtown St. Louis office-to-residential conversion can introduce a similar issue when personal property, such as installed appliances or furnishings included in the sale, is not clearly distinguished from the real property value in the purchase agreement.

Reconciling the Settlement Statement

The final settlement statement rarely matches the earlier estimate exactly, so the ledger should be reconciled against the actual numbers before funds are disbursed. Differences in prorations, title fees, or last-minute credits can shift the boot calculation even when the purchase price itself has not changed.

Handoff to the Tax Advisor

Once the ledger is reconciled, it is handed to the CPA along with the settlement statements from both sides of the exchange and the exchange agreement from the qualified intermediary. The CPA determines the actual tax treatment of any boot, and the working ledger exists to make that review faster and less prone to missing figures, not to substitute for the CPA's own analysis.

Debt Replacement Planning

One of the more preventable sources of boot is a replacement loan that is simply smaller than the debt paid off on the relinquished property, without additional cash contributed to close the gap. This comes up often when a Missouri investor sells a heavily leveraged industrial building near St. Louis and replaces it with a lower-leverage asset in a market like Springfield or Columbia, where lenders may size debt more conservatively relative to the purchase price.

Coordinating debt replacement early, ideally during the same lender preflight step used to test financing feasibility, gives the investor a chance to either add cash, adjust the target purchase price, or select a different candidate before mortgage boot becomes unavoidable. Waiting until the settlement statement is drafted to notice a debt shortfall leaves far fewer options on the table, since by that point the purchase price and closing date are already fixed and cash is the only remaining lever available to close the gap.

Common 1031 Exchange Questions

What counts as boot in a 1031 exchange?

Boot generally includes cash the investor keeps out of the exchange and any reduction in debt on the replacement property that is not offset by additional cash contributed. Non-like-kind property received in the transaction can also count as boot.

Does receiving less debt on the replacement property always create boot?

A lower loan balance on the replacement property can create mortgage boot unless the investor contributes enough additional cash to offset the difference. This is one of the more common ways boot appears without the investor intending it.

Can closing costs affect the boot calculation?

Some closing costs reduce exchange proceeds without creating boot, while others may be treated differently depending on how they are classified, so a settlement statement should be reviewed line by line rather than as one total figure. A CPA can confirm the treatment of specific line items.

Should boot be estimated before or after the replacement property closes?

Both. An early estimate helps with financing and identification decisions, and a final reconciliation against the actual settlement statement confirms the real number before the return is filed. Waiting until after closing to look at boot for the first time removes the chance to adjust financing in advance.

Who determines the final tax treatment of any boot?

The investor's CPA or tax advisor makes that determination as part of preparing the tax return for the year of the exchange. This page describes how the supporting figures are organized, not the tax outcome itself.

Ready to organize the exchange file?