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Free 2026 Interactive Tool

STR Loophole Calculator & Eligibility Checker (2026)

Check the common federal Section 469 paths for one activity and one tax year. See qualification gates and deduction limits separately.

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What this tool can tell you
This checker evaluates the common seven-day classification path and several objective material-participation tests. It does not calculate savings, approve a tax position, combine multiple activities, or guarantee that a loss is deductible.
Step 1 of 333%

Gate one

Calculate the average period of customer use

Use one activity and one tax year. Multiple property classes or grouped activities can require a different calculation.

What are these figures based on?

Educational federal screening only. One activity, one tax year. No savings calculation or eligibility guarantee.

Worked example

A beach condo with 4-day average stays and 160 owner hours

An investor owns one short-term rental directly. Over the full tax year the condo had 45 completed stays totaling 180 customer-use days, with no personal use. The owner and spouse logged 160 hours of their own work. Other people did a meaningful share of the work; the busiest of them, the cleaner, logged 90 hours. This was the first year of the activity and the owner expects a tax loss.

Inputs

Worked example inputs
Figures based onFull-year actual figures
Customer-use days / completed rentals180 / 45
Owner and spouse participation hours160
Substantially all participation by the coupleNo
Most hours by any one other individual90
Prior years of material participationNone
Expected tax resultA tax loss
OwnershipIndividual or disregarded single-member LLC

Calculator output

Worked example calculator output
ResultYou likely meet the two core Section 469 gates
Average customer use4.00 days: common seven-day path fits
Material participationTest 3: more than 100 hours and no individual more
Deduction-readiness review flags0
Limits not resolvedSection 461(l), state treatment, placed-in-service timing, and return-level rules remain

The average stay is 180 / 45, or 4.00 days, which is 7 days or less, so the activity is not treated as a rental activity under the common seven-day path. 160 hours is more than 100 and is not less than the 90 hours of any other individual, so Test 3 is met. The checker does not size the loss or confirm that it can offset W-2 income.

Methodology

How this calculator works

The checker tests two federal Section 469 gates for one activity and one tax year: the classification exception based on average customer use, then the objective material-participation tests. Loss and deduction readiness is reported separately and never changes the core-gate result.

Formulas

  • Average period of customer use = total customer-use days / number of customer-use periods.
  • 7 days or less: the common non-rental path fits. More than 7 and up to 30 days: fits only with significant personal services, so it goes to review. Over 30 days: the common path is not established.
  • Material participation passes on Test 1 (more than 500 hours), Test 3 (more than 100 hours and not less than any one other individual), Test 2 (substantially all participation), or Test 5 (5 or more of the prior 10 years).
  • Limited-partner interests skip Tests 2 and 3; significant-participation, facts-and-circumstances and personal-service paths are sent to review.

Assumptions

  • One activity and one property class, with no grouping election.
  • Owner and spouse hours are combined, as Section 469(h)(5) allows, and exclude investor-type work.
  • Hours and stays are what your records will show; projected figures are flagged.

What it ignores

  • The size of any loss, depreciation and cost segregation.
  • Basis, at-risk, excess business loss (Section 461(l)) and personal-use limits, beyond flagging them.
  • State treatment, Schedule C versus Schedule E, self-employment tax and QBI.

Written by Bryan Martin, CPA, Managing Partner and Founder of Taxstra. Last reviewed October 20, 2026. Taxstra is a CPA firm serving 1,000+ clients in all 50 states.

Educational, not individualized tax advice.

How the STR Eligibility Checker Works

The checker keeps four questions separate: whether the activity fits a Section 469 non-rental category, whether the household materially participates, whether the activity is expected to produce a tax loss, and whether other rules may limit that loss.

A green core-gate result is not a filing conclusion. Read the complete short-term rental tax loophole guide before relying on the result.

What the Tool Deliberately Does Not Approve

Significant services, activity grouping, limited-partner treatment, travel, investor work, personal-service history, and the facts-and-circumstances test can be judgment-heavy. The checker routes those inputs to review.

It also does not decide Schedule E versus Schedule C, self-employment tax, QBI, state treatment, depreciation component classifications, or a currently usable loss.

STR Loophole Calculator FAQs

What does this STR loophole calculator check?

It checks the common federal Section 469 classification path for one activity and one tax year, then tests several material-participation paths that can be evaluated from objective inputs. It reports loss-generation and deduction-limit questions separately. It does not calculate tax savings, determine state treatment, or guarantee deductibility.

How do I calculate the average period of customer use?

For one class of property, divide the aggregate number of days in the relevant periods of customer use by the number of those periods. A customer-use period is the continuous or recurring period when a customer has the right to use the property. Do not add vacant days or owner-use days to this calculation.

Why does the checker use more than 100 hours instead of 100 hours?

Material-participation Test 3 requires more than 100 hours and participation that is not less than any other individual's. Exactly 100 hours does not pass that test. Six other material-participation tests exist, and some cannot be safely resolved with a short consumer questionnaire.

Do spouse hours count for the STR loophole?

Yes for Section 469 material participation. A spouse's participation counts even if the spouse does not own an interest in the activity and even if the couple does not file a joint return. The work still must be participation in the activity rather than excluded investor-type work.

Does a result saying the core gates are met mean the loss will offset W-2 income?

No. It means the inputs likely fit the two core Section 469 gates evaluated by the tool. Basis, at-risk, personal-use, excess-business-loss, entity, state, placed-in-service, and other rules can still limit or defer a loss. A profit or break-even activity also has no current loss to apply.

Is cost segregation required to qualify?

No. Cost segregation is a depreciation-timing strategy that may help create a tax loss. It is not a short-term-rental classification test or a material-participation test. Analyze qualification first, then model depreciation and every applicable loss limitation.

Ready to discuss your short-term rental?

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