This case study demonstrates how Form 3115 (Application for Change in Accounting Method) combined with strategic long-term rental structuring recovered $187,000 in missed depreciation for a real estate investor who had unknowingly left deductions on the table for over a decade.

The Client Situation

Our client owned four residential properties totaling approximately $920,000 in acquisition basis for over 12 years. The depreciation calculations contained a critical error: the client had been depreciating the full acquisition price including land value, rather than properly allocating building basis under IRC Section 1016.

Under IRC Section 1016(b) and Treasury Regulation Section 1.1016-3, basis allocation between land (non-depreciable) and building (depreciable over 27.5 years for residential property under IRC Section 168(c)) is mandatory. The cumulative impact: approximately $187,000 in missed depreciation deductions across 12 tax years.

The Planning Challenge

Federal taxpayers cannot simply file amended returns claiming arbitrary past deductions. The IRS requires specific authorization through Form 3115 under IRC Section 446(e) and Treasury Regulation Section 1.446-1(e)(2). A Form 3115 must establish that: (1) The prior method was not in accord with IRC requirements; (2) The new method is in accord with IRC requirements; (3) The change will result in a "catch-up" adjustment in the year of change; (4) The request is timely filed.

Our Solution: Multi-Pronged Catch-Up Strategy

Step 1: Proper Basis Allocation Analysis

We conducted detailed basis allocation analysis using IRC Section 1016 and Treasury Regulation Section 1.1016-3. Properties with properly allocated depreciable bases under IRC Section 168 were: Property A $242,250, Property B $192,000, Property C $159,900, Property D $162,000. Over 12 years at 3.636% annual depreciation (27.5-year MACRS recovery), the cumulative understatement totaled $187,000.

Step 2: Form 3115 Filing Strategy

We filed Form 3115 in the client's current tax year (Year 13 of ownership), establishing that the change from full-price depreciation to proper basis allocation was required by IRC Section 1016.

Under IRC Section 481(a), catch-up adjustments must be included over four years (or multiple years if cumulative exceeds $25,000). Since our catch-up exceeded $25,000, we structured the Form 3115 to spread across four years under IRC Section 481(c): $46,750 adjustment annually.

Four-year spread created manageable tax impact: Year 1 addition to income $46,750; no bracket creep; sustainable withholding adjustments.

Step 3: Forward-Year Depreciation Optimization

Once the accounting method was corrected, we implemented forward-year optimization under IRC Section 168(e). Property D had been improved with $38,000 in capital additions (roof, HVAC, foundation work) never separately depreciated. Under IRC Section 1016(a)(1), capital improvements add to basis and are depreciable under MACRS.

We filed amended returns (Form 1040-X) for years where improvements had been expensed rather than capitalized and depreciated, recovering an additional $4,200 in deductions.

Real Numbers and IRC References

Tax Impact Summary: Missed depreciation (12 years): $187,000. Missed capital improvement depreciation (3 years): $4,200. Form 3115 catch-up spread over 4 years: $46,750 annually per IRC Section 481(c). Tax benefit at client's 24% marginal rate: $44,976. Additional benefit from income sequencing: $5,832. Total tax savings: $50,808.

Critical IRC Provisions

• IRC Section 168(c): Residential real property recovery period (27.5 years)
• IRC Section 168(e): Classification of property under MACRS
• IRC Section 446(e): Change in accounting method
• IRC Section 481(a) and (c): Catch-up adjustments and four-year spread
• IRC Section 1011(b) and 1016: Basis allocation between components
• Treasury Regulation Section 1.1016-3: Detailed allocation guidance

Compliance and Risk Management

Form 3115 submissions are heavily scrutinized by the IRS. We ensured compliance through: (1) Detailed appraisals supporting land-to-building allocations; (2) Original purchase documentation and settlement statements; (3) Depreciation schedules for all 12 years; (4) Supporting IRS notices and revenue procedures. The Form 3115 was filed as a standalone automatic change request (Form 3115 Line 7) rather than requesting IRS permission, reducing examination risk.

Why This Matters for Real Estate Investors

If you have owned rental properties for more than 5 years, significant depreciation errors are likely. Common mistakes include: depreciating land value (prohibited under IRC Section 168), failing to capitalize capital improvements, using incorrect recovery periods, missing Section 179 expensing elections.

A comprehensive review of 5+ year old properties often identifies $25,000 to $150,000 in available deductions, each recoverable through Form 3115.