AutoZone (AZO) Q1 2026 earnings review
Top-Line Strength Masked by Accounting Noise
AutoZone delivered robust top-line growth in Q1 FY26, with Net Sales up 8.2% and Domestic Same Store Sales holding strong at +4.8%. However, the bottom line tells a different story: EPS fell 4.6% YoY to $31.04. The culprit? A massive 212 basis point non-cash LIFO charge that crushed Gross Margins. Excluding this accounting volatility, the core retail engine is performing well, though rising Operating Expenses (deleveraged 70 bps) and a sharp deceleration in International growth remain valid operational concerns.
🐂 Bull Case
Domestic Same Store Sales grew +4.8%, maintaining the strong momentum seen in 25Q4 (+4.8%) and significantly outperforming the sluggish +0.3% seen a year ago. The core DIY and Commercial business is taking share.
Despite the drop in Net Income, Operating Cash Flow surged 16% YoY to $944 million. The business remains a cash machine, allowing for $431 million in buybacks even in a 'down' earnings quarter.
🐻 Bear Case
Gross Margin collapsed 203 basis points to 51.0%, while Operating Margin fell to 16.9% from 19.7% a year ago. While LIFO explains the gross margin hit, SG&A deleverage (34.0% of sales vs 33.3%) indicates it is becoming more expensive to generate growth.
International growth is losing steam. Constant Currency Same Store Sales came in at +3.7%, a sharp deceleration from +7.2% in the prior quarter (25Q4) and +13.7% a year ago.
⚖️ Verdict: ⚪
Neutral. The sales durability is impressive, but the combination of heavy LIFO charges, OpEx deleverage, and inventory bloat (+13.9%) makes the quality of earnings poor this quarter. Investors must determine if the LIFO hit is transitory or a signal of persistent inflation.
Key Themes
Profitability Hit by LIFO Shock
Reversing. Gross Profit margin fell to 51.0% from 53.0% a year ago. The driver was a 212 basis point non-cash LIFO impact (vs a slight drag last year). This single line item converted a strong sales quarter into an earnings miss. With inventory up 14%, these carrying costs are becoming a significant P&L volatility factor.
International Engine Slowing Down
Decelerating. International expansion has been the growth darling for AutoZone, but the trend is breaking. Constant Currency Same Store Sales slowed to +3.7%. Compare this to +13.7% in 25Q1 and +7.2% in 25Q4. While the company opened 14 net new international stores, the organic growth rate per store is cooling rapidly.
Inventory Growing Faster than Sales
Inventory levels spiked 13.9% YoY to $7.14 billion, significantly outpacing sales growth of 8.2%. Management cites 'growth initiatives and inflation,' but a widening gap between inventory build and sales growth often signals future markdown risk or cash flow headwinds.
Aggressive Footprint Expansion
Accelerating. AutoZone is not slowing down. They opened 53 net new stores in Q1 (39 Domestic, 12 Mexico, 2 Brazil), bringing the total to 7,710. This physical expansion remains the primary lever for top-line compounding, even as SSS varies.
Operating Expense Creep
Operating expenses (SG&A) rose to 34.0% of sales from 33.3% last year. The company explicitly states this is 'driven by investments to support growth initiatives.' While investing for the future is positive, the lack of operating leverage on +8.2% sales growth is disappointing.
Other KPIs
Accelerating. Up 8.2% YoY. This is a solid improvement over the 2.1% growth seen in Q1 of the prior year (25Q1) and continues the momentum from late FY25.
Reversing. Down 4.6% YoY. This is the first year-over-year EPS decline in recent quarters, breaking a long streak of earnings compounding. Driven entirely by the Gross Margin contraction.
Accelerating. Up 16.3% YoY ($811M in prior year). A positive divergence from Net Income, suggesting working capital improvements (likely timing of payables) despite the inventory build.
Guidance
Stable. Management reiterated plans to 'aggressively open stores over the remainder of the fiscal year.' No specific numerical guidance was provided in the release, consistent with company practice.
Key Questions
LIFO Persistence
The 212 bps LIFO impact was a massive shock to margins. Is this a one-time reset due to specific inflationary pockets, or should we model this level of margin drag for the remainder of FY26?
International Deceleration
International constant currency comps decelerated to +3.7% this quarter, the lowest level in over a year and a sharp drop from +7.2% last quarter. Is this macro weakness in Mexico/Brazil or competitive saturation?
Inventory vs. Sales Gap
Inventory grew 14% while sales grew 8%. With accounts payable coverage ratio dropping to 115.6% from 119.5%, are we seeing a structural change in working capital efficiency?
OpEx Leverage
With sales up over 8%, we typically expect SG&A leverage. Instead, OpEx deleveraged 70 bps. When do these 'growth investments' normalize to allow margin expansion?