A US citizen payer should be allowed a deduction on his or her US tax return for alimony payments made to a nonresident. Form I-90 (Application to Replace Permanent Resident Card) needs to be filled out and submitted.You need to ask for spousal support before the divorce decree, ideally in the original pleadings. Did you know that you can no longer claim the alimony paid to your ex-spouse as a tax benefit? Read on to find out, is alimony taxable. When you calculate your gross income to see whether you're required to file a tax return, don't include child support payments received. A person making qualified alimony payments can deduct them. The best way to avoid paying alimony in the event of a divorce is to sign a prenuptial or postnuptial agreement. This helpful guide from the Family Liaison Office (FLO) provides the information and resources you will need during this sometimes difficult process. In the past, the United States and Canada treated spousal support the same way with regard to the tax treatment.