PAST DUE RETURNS Usually, tax financial obligation can be mainly settled by simply submitting overdue returns. The IRS normally imposes charges as well as passion on tax due from missing out on returns, so unless you submit a fine abatement, those will still likely have to be paid. It is also completely feasible that your customer may also be qualified to a refund that they have lost out on as a result of missing out on returns. The only means to learn is by just gathering their monetary documents for that year and also submitting the past due returns.