Thank you, Ted, and good afternoon, everyone.
Beginning with our statement of operations, total investment income was $58.9 million for the quarter, up 10.3% quarter-over-quarter. Recurring interest income rose due to the impact of higher base rates. Fee and prepayment income was strong. Prepayment income was $2.9 million, up from $1.9 million last quarter; and fee income was approximately $1.5 million, up from $500,000 last quarter. Dividend income was essentially flat quarter-over-quarter.
The weighted average yield at cost on our lending portfolio was 8.9% at the end of September, up from 8% at the end of June. The increase in yield was primarily due to higher base rates. Net expenses for the quarter totaled $36.2 million, up $6.3 million quarter-over-quarter due to higher interest expense related to our credit facility, which bears a floating rate interest rate and higher incentive fees.
As a reminder, MFIC's incentive fee on income includes a total return hurdle with a rolling 12-quarter look-back. Given the net loss of $6.6 million for the quarter, incentive fees during the quarter totaled approximately $4 million, up from $1.4 million last quarter. Net investment income per share for the quarter was $0.35.
During the quarter, we recorded a net loss on the portfolio of $6.6 million or $0.10 per share. When you look at our corporate loan book and you exclude the impact of Chyron and K&N, our spreads began -- and considering our spreads began to widen during the quarter, our corporate loan book was slightly down.
On Page 16, in the earnings supplement, we disclosed a net gain or loss by strategy over the past 5 quarters. NAV per share at the end of September was $15.45, a $0.07 -- or $0.05 decrease quarter-over-quarter. The decrease is primarily attributable to the $0.10 loss on the portfolio, partially offset by $0.03 from net investment income relative to our dividend.
Moving on. Our liquidity position remains strong with undrawn revolver capacity well in excess of unfunded commitments to borrowers. We are well positioned to benefit from higher rates. To put some color around the potential for near-term earnings impact, based on quarter-end rates, we estimate that a 100 basis point and a 200 basis point increase in reference rates would result in annual incremental earnings of approximately $0.13 and $0.26, respectively. No stock was repurchased during the quarter.
Lastly, I wanted to mention that MFIC will be changing its fiscal year-end from March 31 to December 31, effective December 31, 2022. Accordingly, MFIC will file its annual report on Form 10-K for the fiscal year ended December 31, 2022, in late February '23.
This concludes our prepared remarks. Operator, please open the call to questions.