What they should get paid depends on their employer and location. Accounting assistants got paid an average $36,120 per year, or $17.37 per hour, as of May 2011, states the U.S. Bureau of Labor Statistics. Their annual pay ranged from $21,450 to $53,250, which was equivalent to $10.31 to $25.60 per hour.he state with the highest population, California, offered the most opportunities for accounting assistants. It contained almost 11 percent of all U.S. jobs and had mean wages of $40,950 per year, or $19.69 per hour.