months ended March 31, 2024 and 2023 differed from the statutory federal income tax rate primarily due to the impact of the change in valuation allowance on deferred tax assets, state taxes, and permanent items related to certain debt items that are expensed for book purposes but are not deductible for tax purposes.
In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized, and when necessary, valuation allowances are recorded. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. We assess the realizability of our deferred tax assets quarterly and consider carryback availability, the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. In the first quarter of 2024, the effective tax rate takes into consideration the estimated valuation allowance based on forecasted 2024 income.
We continue to monitor income tax developments in the United States. We will incorporate into our future financial statements the impacts, if any, of future regulations and additional authoritative guidance when finalized.
Liquidity and Capital Resources
Our liquidity as of March 31, 2024 was $20.4 million, consisting of cash on hand of $6.9 million and $13.5 million of availability under our $40.0 million Revolving ABL Credit Facility, based on a borrowing base of $21.9 million.
During the first quarter of 2024, cash flow from operations was positive. On March 31, 2024, we paid in-kind the $13.3 million interest payment due under our Convertible Notes. On March 31, 2024, our noteholders accepted our mandatory offer to redeem $3.5 million of Convertible Notes plus accrued interest. As a result, on March 31, 2024, we paid $3.5 million principal and $0.3 million in accrued interest in cash. We funded the redemption through borrowings under our Revolving ABL Credit Facility. Looking forward, we have elected to pay in-kind interest under our Convertible Notes that is due and payable on September 30, 2024.
We expect our future capital and liquidity needs to be related to operating expenses, maintenance capital expenditures, payment of mandatory offer obligations on our Convertible Notes, working capital and general corporate purposes.
We believe that our cash and cash equivalents, cash flows from operating activities and borrowings under our Revolving Credit Facility will adequately finance all of our anticipated purchase commitments, capital expenditures and other cash requirements over the next twelve months from issuance.
Net Cash Provided by Operating Activities
Cash provided by operating activities was $11.0 million for the three months ended March 31, 2024 compared to cash provided by operating activities of $13.6 million for the three months ended March 31, 2023. Factors affecting changes in operating cash flows are similar to those that impact net earnings, with the exception of non-cash items such as depreciation and amortization, impairments, gains or losses on disposals of assets, gains or losses on extinguishment of debt, non-cash interest expense, non-cash compensation, deferred taxes, and amortization of debt discount and debt issuance costs. Additionally, changes in working capital items such as accounts receivable, inventory, prepaid expense and accounts payable can significantly affect operating cash flows. Cash flows from operating activities during the first three months of 2024 were higher as a result of an increase in net loss of $9.0 million, adjusted for non-cash items, of $20.0 million for the three months ended March 31, 2024, compared to $26.6 million for non-cash items for the three months ended March 31, 2023. Working capital changes increased cash flows from operating activities by $0.1 million for the three months ended March 31, 2024 and decreased cash flows from operating activities by $13.0 million for the three months ended March 31, 2023.
Net Cash Used In Investing Activities
Cash used in investing activities was $8.2 million for the three months ended March 31, 2024 and $18.1 million for the three months ended March 31, 2023. During the first three months of 2024, cash payments of $10.0 million for capital expenditures were offset by proceeds from the sale of property, plant and equipment of $1.8 million. During the 2023 period, cash payments of $18.8 million for capital expenditures were offset by proceeds from the sale of property, plant and equipment of $0.7 million.