Due to the recession, cash flow is crucial for small businesses, sole proprietors, and individuals. Though the infusion of capital from your tax refund likely won't save your business it can be a welcome influx for any strapped organizations. Plus, it's your money anyway -- don't risk delaying getting it back by making these mistakes.The wheels of the Internal Revenue Service grind slowly, methodically, and relentlessly. That can make the time from filing to tax refund seem endless, but the delay will become unbearable if you stumble over several simple steps in your filing. According to the IRS, these are 9 of the most common errors that delay processing of tax returns.