Final answer:
Helen will owe a penalty for bouncing a check to the IRS, which is typically a fixed fee or a percentage of the check amount, depending on the check's value. For her $1,000 check, she will likely face a fixed fee as a penalty.
Step-by-step explanation:
When Helen mailed a check to the Internal Revenue Service (IRS) without sufficient funds in her bank account, she incurred a penalty for the bounced check. The IRS typically charges a dishonored check penalty, which can either be a specific dollar amount or a percentage of the check amount, depending on how much the check was for. As of the latest guidelines, if a check is for an amount greater than $1,250, the penalty is 2% of the check amount. For checks of lesser amounts, the penalty could be a smaller, set fee. Given that Helen's check was for $1,000, she would incur a penalty based on the fixed amount set by the IRS for checks under $1,250, which could be around $25 or more.