Final answer:
Joint quarterly estimated tax payments made by a couple before divorce can be divided between their individual tax returns. The division of payments is based on mutual agreement or divorce decree and is generally divided evenly unless agreed upon otherwise.
Step-by-step explanation:
When a couple who has made joint quarterly estimated tax payments divorces before the end of the tax year, the estimated payments that were made while they were married can be divided between their individual tax returns. According to IRS guidelines, the allocation of these payments can be made as agreed upon by the divorced couple or as determined by divorce decree or separate maintenance agreement. If no specific agreement or decree stipulates otherwise, estimated tax payments may be divided in any other manner that is fair and equitable. Option 3) The estimated payments will be divided evenly between the two individual returns, should there be a mutual agreement or a proportional basis relative to each individual's tax liability.