directors and certain officers of the Company and a $1.2 million increase in professional fees and outside services associated with external consulting, legal, audit and accounting services. Furthermore, there was a $1.2 million increase in fees related to marketing, public relations for the Company, and expenses related to new office located in South Korea and a $1.5 million increase in allocation of costs based on cost centers for the three months ended March 31, 2022 primarily due to cost rationalization efforts.
Interest Income
Interest income for the three months ended March 31, 2022 and March 31, 2021 was immaterial.
Other (expense) income, net
Other (expense) income, net decreased by $8.7 million for the three months ended March 31, 2022 as compared to the three months ended March 31, 2021, to other expense, net of $7.8 million from $0.8 million of other income, net. The decrease was the result of a charge of $7.7 million associated with the change in fair value of Sponsor Earn-Out liability and a decrease of $1.0 million in other income primarily from a gain recognized for PPP loan forgiveness during the three months ended March 31, 2021.
Provision for Income Taxes
The provision for income taxes for the three months ended March 31, 2022 and March 31, 2021 was immaterial.
Liquidity and Capital Resources
On February 3, 2022, as a result of the aforementioned Business Combination and PIPE Financing, we raised $282.9 million in net proceeds. Prior to that, since our inception we raised approximately $269.9 million of funding through the sales of our redeemable convertible preferred stock. As of March 31, 2022, we had total cash, cash equivalents and restricted cash of $426.6 million and an accumulated deficit of $121.3 million. As an early-stage growth company in the pre-commercialization stage of development, the net losses we have incurred since inception are consistent with our strategy and budget. We believe that our cash on hand will be sufficient to meet our working capital and capital expenditure requirements for a period of at least the next 12 months, and also sufficient to fund the completion of our Pilot Facility and creation of our Expansion I Facility. However, additional funding may be required for a variety of reasons, including, delays in expected development.
The proceeds raised from Business Combination and PIPE Financing will be used in future research and development activities and are sufficient for the building of manufacturing prototyping lines to facilitate the production of pre-manufacturing batteries by 2024. We have yet to generate any revenue from our business operations, and since inception, we have not achieved profitable operations or positive cash flows from our operations.
We plan to finance our operations with a combination of proceeds from the Business Combination, capital from investors, and if required in the future, loans from financial institutions, as well as anticipated future revenue from product sales. Our ability to successfully develop our products, commence commercial operations and expand our business will depend on many factors, including our working capital needs, the availability of equity and/or debt financing and, over time, our ability to generate positive cash flows from operations.
As a result of the capital-intensive nature of our business, we expect to sustain substantial operating expenses, without generating sufficient revenues, to cover expenditures for a number of years. Over time, we expect that we will need to raise additional funds through a variety of possible methods, including, but not limited to, entry into joint ventures or other strategic arrangements, the issuance of equity, equity- related or debt securities or through obtaining credit from financial institutions. These funds are expected to finance our principal sources of liquidity, ongoing costs such as research and development relating to our batteries and the construction of manufacturing facilities, including the creation of our Expansion I Facility and Expansion II Facility.