Other revenue increased by 29.3% to ¥212,731 thousand (approximately $1,568 thousand) in the fiscal year ended June 30, 2022 from ¥164,497 thousand (approximately $1,212 thousand) in the fiscal year ended June 30, 2021, primarily due to higher miscellaneous sales, including higher property management revenue, real estate brokerage commissions, and higher hotel revenue compared to the prior fiscal year.
Cost of Revenue and Gross Margin
Cost of revenue for real estate development and sales increased by 22.4% year-over-year to ¥11,812,347 thousand (approximately $87,054 thousand), primarily reflecting higher direct costs associated with higher revenue.
Gross margin increased to 17% in the fiscal year ended June 30, 2022, compared to 13.2% in the fiscal year ended June 30, 2021, primarily driven by higher deliveries of condominiums and higher average selling price of land.
Selling, General, and Administrative Expenses and Operating Margin
Selling, general, and administrative expenses were ¥1,786,614 thousand (approximately $13,167 thousand) in the fiscal year ended June 30, 2022, compared to ¥1,033,402 thousand (approximately $7,616 thousand) in the fiscal year ended June 30, 2021. As a percentage of revenue, selling, general, and administrative expenses increased to 12.5% in the fiscal year ended June 30, 2022, from 9.2% in the fiscal year ended June 30, 2021, due to higher indirect costs, including expensed IPO preparation expenses, offset by higher revenue.
As a result, operating income increased by 43% to ¥649,188 thousand (approximately $4,784 thousand) in the fiscal year ended June 30, 2022 from ¥453,647 thousand (approximately $3,343 thousand) in the fiscal year ended June 30, 2021 and operating profit margin increased from 4.5% to 4.0%.
Interest Expense
Interest expense decreased to ¥23,333 thousand (approximately $172 thousand) in the fiscal year ended June 30, 2022 from ¥56,650 thousand (approximately $417 thousand) in the fiscal year ended June 30, 2021, reflecting higher amounts of capitalized interest associated with our increased number of development projects, which offset higher net borrowings and interest incurred.
Other Income, net
Other income was ¥186,007 thousand (approximately $1,371 thousand) in the fiscal year ended June 30, 2022 compared to other expense of ¥9,770 thousand (approximately $72 thousand) in the fiscal year ended June 30, 2021, due primarily to gain on sale of fixed assets.
Provision for Income Taxes
For the fiscal years ended June 30, 2022 and 2021, we had a tax provision of ¥283,479 thousand (approximately $2,089 thousand) and ¥134,869 thousand (approximately $994 thousand), respectively, which resulted in an overall effective income tax rate of 34.9% and 34.8%, respectively. The overall effective income tax rate was higher in fiscal year 2022 primarily reflecting the impact of deductions and book-tax adjustments.
Profit (Loss)
As a result of the foregoing, our net income attributable to ordinary shareholders increased by 109.4% to ¥528,383 thousand (approximately $3,894 thousand) in the fiscal year ended June 30, 2022 from ¥252,358 thousand (approximately $1,860 thousand) in the fiscal year ended June 30, 2021.
Liquidity and Capital Resources
We believe we have a prudent strategy for company-wide cash management, including controls related to cash outflows for lot purchases and general contractor and subcontractor management as well as access to short-term borrowings and shortened cash conversion cycles related to our land delivery strategy.