This could happen. However, if you amend your 2015 return to include an Injured Spouse/Innocent Spouse claim you can prevent the garnishment of the non-debtor spouse’s refund to pay the debts of the debtor spouse.
The menu path for the Injured Spouse/Innocent Spouse claim form is in Other Tax Situations>Miscellaneous Tax Forms>Start>Report an injured or innocent spouse claim>Start.
When you file this claim with your return, the IRS receives sufficient information to split the joint return refund between the contributing spouses. This claim will also protect the non-debtor spouse’s refund from garnishment. The joint return typically produces a lower tax and a higher refund because the joint return tax rates are lower than the married filing separately tax rates.