H&R Block got through the first weeks of tax season with a drop in business as it reported a 6.2 percent decline in revenue, but a 5 percent rise in net income for the third quarter ended January 31. The company said the revenue drop reflected a 7.1 percent decline in retail tax returns prepared and it had lost two percentage points in market share in selling digital products. Its business operations sector, RSM McGladrey, fared better with a 3.6 percent drop in revenue for the same quarter.