Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations (continued)
Stock compensation expense
Included in total expenses were noncash stock-based compensation costs of $8,673 and $8,675 for the three months ended June 30, 2022, and 2021, respectively, and $31,972 and $30,563 for the six months ended June 30, 2022, and 2021, respectively. Compensation expense for all stock-based awards is based on the grant date fair value and recognized over the required service (vesting) period. Unrecognized non-cash stock-based compensation expense was $3,941 as of June 30, 2022 and will be recognized through 2023.
Interest
Interest expense was $5,769 for the three months ended June 30, 2022, and $9,014 for the three months ended June 30, 2021. Interest expense was $12,262 for the six months ended June 30, 2022, and $16,652 for the six months ended June 30, 2021. The decrease was due to final payments of multiple finance leases during 2021.
Income taxes
Income tax expense was $83,400 and $47,473 for the three months ended June 30, 2022, and 2021, respectively, and $144,200 and $138,093 for the six months ended June 30, 2022, and 2021, respectively. At December 31, 2021, the deferred tax asset was $663,820. Management considered new evidence, both positive and negative, during the first half of 2022 that could affect its view of the future realization of deferred tax assets and determined that no valuation allowance was necessary, and the deferred tax asset was $531,720 at June 30, 2022.
Income applicable to common stock
Income applicable to common stock for the three months ended June 30, 2022, and 2021, was $664,873 and $115,510, respectively. Income applicable to common stock for the six months ended June 30, 2022, and 2021, was $1,049,274 and $762,057, respectively. The increase was primarily the result of higher revenue and gross profit.
Liquidity and Capital Resources
Cash
As of June 30, 2022, cash on hand was $5,409,210 compared to $4,140,942 at December 31, 2021. The increase was principally due to record total revenue and higher gross profit for the first six months of 2022.
Working capital
At June 30, 2022 working capital was $5,085,961 compared to $3,907,135 at December 31, 2021, an increase of $1,178,826 or 30.2%. Cash increased $1,268,268, receivables increased $287,692, inventories increased $2,544,430, customer deposits increased $2,137,883, while prepaid expenses decreased $632,305.
Cash from operations
Net cash provided by operating activities during the six months ended June 30, 2022, was $1,490,066 and $1,249,462 for the six months ended June 30, 2021. In addition to the net income generated, this included depreciation and amortization of $249,992 and $273,688, and noncash stock-based compensation costs of $31,972 and $30,563 for the six months ended June 30, 2022, and 2021, respectively.
The decrease in prepaid expenses was related to the receipt of inventory paid for in December 2021 and received in January 2022. Inventories and customer deposits increased due to orders received late in 2021 and throughout the first six months of 2022.