There are many advantages to filing a joint tax return with your spouse. Joint filers receive one of the largest Standard Deductions each year. This lets couples deduct a significant amount when they calculate their taxable income.
Couples who file together can often more easily qualify for various tax credits, like:
- Earned Income Tax Credit
- American Opportunity and Lifetime Learning Education Tax Credits
- Exclusion or credit for adoption expenses
- Child and Dependent Care Credit
Joint filers usually have higher income thresholds for certain taxes and deductions—this means they can earn a higher income and still qualify for certain tax breaks.
What about Married Filing Separately?
On the other hand, couples who file separately typically get fewer tax benefits. Separate tax returns may result in more tax.
In 2024, Married Filing Separately taxpayers get a Standard Deduction of $14,600. Compare this to the $29,200 that those who filed jointly can get. These amounts increase to $15,000 and $30,000, respectively, for 2025. While when you add up the two separately filing Standard Deductions it equals the joint filing amount, there can be a significant difference when one spouse makes all or most of the family income. When filing jointly, the spouse with the higher income gets to use the other spouse’s Standard Deduction as well as using the more favorable jointly filing tax brackets as compared to filing separately.
There are other downsides to filing separate returns:
If you file a separate return from your spouse, you are often automatically disqualified from several of the tax deductions and credits mentioned earlier.
- Separate filers usually get a smaller IRA contribution deduction.
- Couples who file separate returns can't take the student loan interest deduction.
- The capital loss deduction limit is $1,500 each when filing separately, vs $3,000 on a joint return.
When should married couples file taxes separately?
Despite the numerous advantages of filing jointly, there are certain circumstances where filing separately could better serve your financial needs.
When It Makes Sense
- Medical expenses: If you or your spouse had a large amount of out-of-pocket medical bills, filing separately might help you surpass the IRS’s threshold to deduct these costs. That’s because the threshold is based on a percentage of your Adjusted Gross Income (AGI), which would be lower if only considering one income.
- Student loan payments: If your student loan repayment plan is determined by the income on your tax return, filing separately may help you keep your payments more manageable.
- Separated finances: In situations where couples prefer or need to keep their financial matters distinct—such as when preparing for a divorce — filing separately can provide that financial division. Filing separately can also limit your liability for your spouse’s tax matters.
Let’s look at an example of how filing separately could be a better choice. Say you have $10,000 in medical expenses and earned $50,000 from your job. That would meet the 7.5% threshold ($10,000 ÷ $50,000 = 20% of your income). But if you filed together with your spouse, your adjusted gross income jumps to $135,000. This would disqualify you from claiming these medical expenses ($10,000 ÷ $135,000 = 7.4% of your income). Source