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Like Kind Exchange Timeline Calculator

1031 has strict deadlines. This calculator tracks the 45/180 day clock.

Reviewed byJulian Germanfor EveryCalcMethodology

Days since sale

Candidates identified

Replacements acquired

Days to 45-day deadline

Days to 180-day deadline

150

Status

ON TRACK

How the math works

Days to 45-day = max(0, 45 − days since sale). Same for 180-day.

Build a 21-day identification safety buffer. Waiting until day 44 to submit the 45-day ID is unnecessary stress — most successful exchanges identify 2-3 candidates by day 30 and lock the final choice by day 40. Last-minute identifications fail at 2-3x the rate of buffered ones.

Editorial noteReviewed by Julian German - Updated July 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Like Kind Exchange Timeline Calculator is built to give a quick, browser-based estimate for like kind exchange timeline. 1031 has strict deadlines. This calculator tracks the 45/180 day clock. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the like kind exchange timeline result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this like kind exchange timeline estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter days since relinquished closing.
Enter candidate properties identified.
Enter replacement properties acquired.
Read remaining days on each deadline.

Frequently Asked Questions

45-day rule?

Identify replacement property(ies) within 45 calendar days of relinquished sale. Three-property rule (up to 3), 200% rule (unlimited at up to 200% of relinquished value), or 95% rule. No extensions.

180-day rule?

Complete exchange within 180 calendar days of relinquished sale. Or tax return due date (with extensions), whichever earlier. Weekends/holidays don't extend. Federally declared disasters occasionally trigger extensions (rare).

If deadlines missed?

Exchange fails. Relinquished sale treated as taxable. Gain recognized. No cure available. Critical to hire experienced QI and attorney — missed deadlines are almost always attorney/QI procedural failures, rarely borrower-caused.

How often should I rerun this?

Rerun this calculator whenever inputs change materially — new rent roll data, rate moves, loan balance updates, or quarterly operating data. For active deals, monthly refresh is typical. For stabilized assets under monitoring, quarterly is fine. Treat the output as a decision tool, not a one-time answer — market conditions evolve and so should your analysis.

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