PIT-B: 10. 2025 PIT-B Allocation & Apportionment of Income Schedule (2025)
New Mexico · New Mexico TRD · Used for tax years 2025
The 2025 New Mexico PIT-B is an allocation and apportionment of income schedule filed with your personal income tax return, Form PIT-1. It reports total federal income and New Mexico income, calculates the tax amount to enter on PIT-1, and includes a worksheet for apportioning bu
Who files this form
For tax year 2025, taxpayers who allocate and apportion income from both inside and outside New Mexico must complete Schedule PIT-B. Include it with your New Mexico personal income tax return, Form PIT-1.
What you'll need
Have the forms and information used to complete PIT-B:
- Form PIT-1, including the amounts on lines 9, 17, and 19.
- Federal Schedule 1, line 26, for federal adjustments to income.
- Schedule PIT-ADJ, lines 1 and 7, for the difference included with nonbusiness interest and dividends.
- Your name, Social Security number, and total federal and New Mexico income amounts for the categories listed on PIT-B.
- Residency periods for first-year and part-year residents, including a spouse's different residency periods, if applicable.
For business or farm income, the page 2 worksheet asks for the business name, tax identification number, and property, payroll, and sales amounts for both New Mexico and everywhere. Complete a separate worksheet for each business or farm.
How to file
Include your completed 2025 Schedule PIT-B with Form PIT-1.
If you have business or farm income, complete the worksheet on page 2 to determine line 8, Column 2. For more than one business or farm, calculate each result separately and enter the sum on that line. Attach each worksheet to your PIT-1 and PIT-B.
Enter the tax calculated on PIT-B, line 14, on PIT-1, line 18. Mark B in the box on PIT-1, line 18a, to show that the tax came from PIT-B.
Common mistakes
- Not allocating the specified resident income and deductions fully to New Mexico. The form says resident taxpayers, including people physically present in New Mexico for 185 days or more, must allocate all income and deductions on lines 1, 2, 3, and 7 in full to New Mexico.
- Missing the PIT-110 checkbox. If you used Form PIT-110 to calculate line 1, Column 2, mark box 1a.
- Entering too little total income in Column 1. Line 11, Column 1, must equal or exceed federal adjusted gross income on PIT-1, line 9.
- Leaving out separate business or farm worksheets. Complete and attach a worksheet for each business or farm.
- Missing residency periods. First-year and part-year residents must enter their residency periods. Enter a spouse's periods separately if they differ, and add any additional periods in the space provided.
Questions people ask
What are the two income columns for?
Column 1 is for total federal income. Column 2 is for New Mexico income.
What if I have no business or farm income?
The form directs you to skip Section 2 and go to line 9.
Do I need a worksheet for each business or farm?
Yes. Complete a separate worksheet for each, add the calculated results for line 8, Column 2, and attach each worksheet to PIT-1 and PIT-B.
When should I mark a military spouse relief box?
Mark the appropriate taxpayer or spouse box if that person is a military servicemember's spouse who qualifies for relief under the Military Spouse Residency Relief Act, is not a New Mexico resident, and is allocating income from services performed in New Mexico to their state of residence.