Other research and development costs increased by €8.4 million, primarily driven by an increase in personnel costs of €10.9 million and non-cash share-based payment of €4.4 million due to a higher number of employees in research and development functions. Facility costs increased by €6.3 million, whereas IT costs decreased by €6.9 million and professional fees decreased by €3.4 million. Other costs allocated to research and development functions decreased by a total of €2.9 million, primarily relating to laboratory operations and supplies. Research and development costs included non-cash share-based payment of €37.4 million for the year ended December 31, 2021, compared to €33.0 million for the year ended December 31, 2020.
Selling, General and Administrative Expenses
Selling, general and administrative expenses were €160.2 million for the year ended December 31, 2021, an increase of €83.5 million, or 109%, compared to €76.7 million for the year ended December 31, 2020. The higher expenses were primarily due to an increase in personnel costs of €21.2 million and non-cash share-based payment of €9.2 million for additional commercial and administrative personnel, and an increase in IT costs of €18.3 million, primarily related to the implementation of a new enterprise resource planning system, as well as increases in commercial expenses of €13.9 million, and in professional fees of €9.6 million. Other costs allocated to selling, general and administrative functions increased by a total of €11.3 million, primarily reflecting increased insurance costs of €4.6 million, facility costs of €2.7 million, and travel costs of €1.3 million.
Selling, general and administrative expenses included non-cash share-based payment of €29.4 million for the year ended December 31, 2021, compared to €20.2 million for the year ended December 31, 2020.
Net Profit / (Loss) in Associate
Net profit of associate was €12.0 million for the year ended December 31, 2021, compared to a net loss of €9.5 million for the year ended December 31, 2020. For the year ended December 31, 2021, the net profit of associate comprised a non-cash gain of €42.3 million as a result of the Series B financing in VISEN on January 8, 2021, and our share of loss of €30.3 million. The Series B financing did not change our accounting treatment of VISEN.
Finance Income and Finance Expenses
Finance income was €59.7 million for the year ended December 31, 2021, an increase of € 57.9 million compared to €1.8 million for the year ended December 31, 2020. Finance expenses were €3.9 million for the year ended December 31, 2021, a decrease of €76.9 million compared to €80.8 million for the year ended December 31, 2020. As we hold positions of cash and cash equivalents, and marketable securities in U.S. Dollar, we are affected by exchange rate fluctuations when reporting our financial results in Euro. For the year ended December 31, 2021, we recognized net exchange rate gains when reporting our U.S. Dollar positions in Euro, reflecting positive exchange rate fluctuations, compared to net exchange rate losses recognized for the year ended December 31, 2020, reflecting negative exchange rate fluctuations.
We did not have any interest-bearing debt for any of the periods presented. However, we have accrued interest expenses on lease liabilities in accordance with IFRS 16, “Leases”.
Tax on Profit / (Loss) for the Year
Tax for the year ended December 31, 2021, was a net tax credit of €0.4 million compared to a net tax credit of €0.2 million for the year ended December 31, 2020. Under Danish tax legislation, tax losses may be partly refunded by the tax authorities to the extent such tax losses arise from research and development activities. For the year ended December 31, 2021, the jointly taxed Danish entities had a tax loss, and accordingly were entitled to a tax refund of approximately €0.7 million, partly offset by net tax provisions of €0.3 million in our German and U.S. subsidiaries.
Cash flows from / (used in) Operating Activities
Cash flows used in operating activities for the year ended December 31, 2021, was €417.6 million compared to €271.5 million for the year ended December 31, 2020. The net loss for the year ended December 31, 2021, of €383.6 million included non-cash charges of €67.8 million, comprising share-based payment of €66.8 million, and depreciation and amortization of €15.4 million, partly offset by non-cash revenue of €2.4 million, and net gain from share of profit/(loss) of associate of €12.0 million. In addition, net loss for the year comprises non-operating items from net financial income and expenses, and income taxes of net €54.2 million, primarily related to foreign exchange rate gain from U.S. Dollar denominated cash and cash equivalents, and marketable securities.