Richard D. Fairbank
Chief Executive Officer at Capital One Financial
Thank you, Andrew, and good evening, everyone. Slide 10 shows third quarter results in our credit card business. Credit card segment results are largely a function of our domestic card results and trends, which are shown on Slide 11.
In the third quarter, our domestic card business delivered another quarter of top line growth, strong margins and stable credit. Year-over-year purchase volume growth for the quarter was 5%. Ending loan balances increased $9.1 billion or about 6% year- over-year. Average loans increased about 7% and third quarter revenue was up 10%, driven by the growth in purchase volume and loans.
Revenue margin for the quarter increased 43 basis points year-over-year to 18.7%. The full quarter effect of the end of the Walmart revenue sharing agreement drove a 51 basis point year-over-year increase. Excluding this impact, the revenue margin would have been about 18.2%. The charge off rate for the quarter was 5.61%. The full quarter impact of the end of the Walmart loss sharing agreement increased the quarterly charge off rate by 38 basis points. Excluding this impact, the charge off rate for the quarter would have been 5.23%, up 83 basis points year-over-year. The 30 plus delinquency rate at quarter end was 4.53%, up 22 basis points from the prior year. As a reminder, the end of the Walmart loss sharing agreement did not have a meaningful impact on the delinquency rate.
The pace of year over year increases in both the charge off rate and the delinquency rate have been steadily declining for several quarters and continued to shrink in the third quarter. On a sequential quarter basis, the charge off rate excluding the Walmart impact was down 63 basis points and the 30 plus delinquency rate was up 39 basis points. Both sequential quarter trends are consistent with seasonal expectations.
Domestic card non-interest expense was up 12% compared to the third quarter of 2023, primarily driven by higher marketing expense. Total company marketing expense in the quarter was $1.1 billion, up 15% year-over-year. Our choices in domestic card are the biggest driver of total company marketing. We continue to see compelling growth opportunities in our domestic card business.
Our marketing continues to deliver strong new account growth across the domestic card business compared to the third quarter of 2023. Domestic card marketing in the quarter included increased marketing to grow originations at the top of the market, higher media spend and increased investment in differentiated customer experiences like our travel portal, airport lounges and Capital One shopping.
Slide 12 shows third quarter results in our consumer banking business. Auto originations were up 23% year-over-year in the third quarter. Our stable credit performance, which is the result of choices we've made over the past couple of years, puts us in a strong position to lean into current origination opportunities in the marketplace.
Consumer banking ending loans were essentially flat year-over-year and average loans were down 1%. On a linked quarter basis, ending loans and average loans were both up 1%. Compared to the year ago quarter, both ending and average consumer deposits were up about 6%.
Consumer banking revenue for the quarter was down about 3% year over year, largely driven by higher deposit costs compared to the prior year quarter. Non interest expense was up about 5% compared to the third quarter of 2023, driven largely by continued technology investments and increased auto originations.
The auto charge off rate for the quarter was 2.05%, up 28 basis points year-over-year. The 30 plus delinquency rate was 5.61%, down three basis points year-over-year. Largely, as the result of our choice to tighten credit and pull back in 2022, auto charge offs have been strong and stable.
Slide 13 shows third quarter results for our commercial banking business. Compared to the linked quarter, ending loan balances decreased about 2%. Average loans were down about 1%. The modest declines are largely the result of choices we made in 2023 to tighten credit. Ending deposits were up about 5% from the linked quarter. Average deposits were down about 1%. We continue to manage down selected less attractive commercial deposit balances.
Third quarter revenue was up 1% from the linked quarter and non-interest expense was up by about 2%. The commercial banking annualized net charge off rate for the third quarter increased seven basis points from the sequential quarter to 0.22%. The commercial banking criticized performing loan rate was 7.66%, down 96 basis points compared to the linked quarter. The criticized non-performing loan rate increased nine basis points to 1.55%.
In closing, we continued to post strong results in the third quarter. We delivered another quarter of top line growth in domestic card loans, purchase volume and revenue. In the auto business, we saw year-over-year growth in originations for the third consecutive quarter and consumer credit trends remained stable.
Our year-to-date operating efficiency ratio net of adjustments through September was 41.7%. We had guided to 2024 annual operating efficiency ratio net of adjustments to be modestly down compared to the 43.5% we posted in 2023. Our view included the positive impact from the end of the revenue sharing related to the Walmart partnership and assumed the CFPB late fee rule would take effect in October.
Looking forward, we now expect the full year 2024 annual operating efficiency ratio net of adjustments to be in the low 42s. We expect a sequential quarter increase in operating expense in the fourth quarter, that will be roughly in line with historical patterns as we continue to invest in our technology transformation. And we are no longer assuming that the CFPB late fee rule will be implemented in 2024, given ongoing uncertainty around industry litigation.
Our view of 2024 marketing has not changed. We continue to lean into marketing to grow and to further strengthen our franchise. In the domestic card business, we continue to get traction in originations across our products and channels. In consumer banking, we're leaning into marketing to grow our digital-first national banking franchise. We continue to expect total company marketing in the second half of 2024 to be meaningfully higher than in the first half, similar to the pattern we saw last year, and that includes the much higher marketing levels that we typically see in the fourth quarter.
And turning to the Discover acquisition, we're working closely with the regulators as our applications continue to work their way through the regulatory approval process. Separately, Discover mentioned in their press release and on their earnings call last week that they continue to work in parallel with the SEC to resolve comments regarding their accounting approach for their card misclassification matter. As soon as that process wraps up, we expect to mail out a joint proxy and a schedule -- and to schedule a shareholder vote, most likely early next year. We remain well positioned to get shareholder and regulatory approvals and we expect to be in a position to complete the acquisition early in 2025, subject to regulatory and shareholder approval.
Pulling way up, the acquisition of Discover is a singular opportunity. It will create a consumer banking and global payments platform with unique capabilities, modern technology, powerful brands, and a franchise of more than 100 million customers. It delivers compelling financial results and offers the potential to enhance competition and create significant value for merchants and customers.
And now we'll be happy to answer your questions. Jeff?