Richard McPhail
Executive Vice President and Chief Financial Officer at Home Depot
Thank you, Billy, and good morning, everyone. In the first quarter, total sales were $36.4 billion, a decrease of approximately 2.3% from last year. During the first quarter, our total company comps were negative 2.8% with comps of negative 4% in February, negative 0.8% in March and negative 3.3% in April. Comps in the U.S. were negative 3.2% for the quarter with comps of negative 4.8% in February, negative 1.3% in March and negative 3.6% in April. For the quarter, Mexico posted positive comps, whereas Canada was slightly below the company average. In the first quarter, our gross margin was 34.1%, an increase of approximately 45 basis points from the first quarter last year, primarily driven by benefits from lower transportation cost and shrink. During the first quarter, operating expense as a percent of sales increased approximately 140 basis points to 20.2% compared to the first quarter of 2023. The increase was primarily driven by a benefit from a legal settlement that we are overlapping from the first quarter of fiscal 2023 as well as deleverage from our top line results. Our operating expense performance was in line with our expectations. Our operating margin for the first quarter was 13.9% compared to 14.9% in the first quarter of 2023. Interest and other expense for the first quarter decreased by $13 million to $428 million. In the first quarter, our effective tax rate was 22.6% compared to 24.2% in the first quarter of fiscal 2023. Our diluted earnings per share for the first quarter were $3.63, a decrease of 5% compared to the first quarter of 2023. During the first quarter, we opened 2 new stores, bringing our total store count to 2,337.
Retail selling square footage was approximately 242 million square feet. At the end of the quarter, merchandise inventories were $22.4 billion, down approximately $3 billion or 12% compared to the first quarter of 2023, and inventory turns were 4.5x, up from 3.9x last year. Turning to capital allocation. During the first quarter, we invested approximately $850 million back into our business in the form of capital expenditures. And during the quarter, we paid approximately $2.2 billion in dividends to our shareholders, and we returned approximately $600 million to shareholders in the form of share repurchases. As a reminder, in March, we announced our intent to acquire SRS Distribution, and as a result, we paused share repurchases. As you've heard us say many times, we maintain a disciplined approach to capital allocation, and that is not changing. First and foremost, we will invest in the business and expect capital expenditures of approximately 2% of sales on an annual basis. After investing in the business, we plan to pay the dividend, and it is our intent to return any excess cash to shareholders in the form of share repurchases. From time to time, we will also invest in the business through acquisitions to enhance our capabilities and to accelerate our strategic objectives.
Computed on the average of beginning and ending long-term debt and equity for the trailing 12 months, return on invested capital was 37.1% down from 43.6% -- excuse me, down from 43.6% in the first quarter of fiscal 2023. Now I will comment on our guidance for fiscal 2024. Today, we are reaffirming our guidance for 2024. As a reminder, our guidance does not currently reflect any impact from the announced acquisition of SRS. The acquisition is currently under regulatory review, and we expect it to close by the end of fiscal 2024. We expect total sales growth to outpace sales comp with sales growth of approximately positive 1% and comp sales of approximately negative 1%. Total sales growth will benefit from a 53rd week, and we expect the 53rd week will contribute approximately $2.3 billion in sales.
Our gross margin is expected to be approximately 33.9%, an increase of approximately 50 basis points compared to fiscal 2023. We expect operating margin of approximately 14.1%. Our effective tax rate is targeted at approximately 24.5%. We expect net interest expense of approximately $1.8 billion, and our diluted earnings per share percent growth is targeted to be approximately 1% compared to fiscal 2023. It is our intent to update guidance as appropriate once the SRS transaction closes. We believe that we have positioned ourselves to meet the needs of our customers in any environment. The investments we've made in our business have enabled agility in our operating model. As we look forward, we will continue to invest to strengthen our position with our customers, leverage our scale and low-cost position to drive growth faster than the market and deliver shareholder value.
Thank you for your participation in today's call. And Christine, we are now ready for questions.