New Mexico PIT-X not working

Forum|Forum|1 year ago
March 2, 2025
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I am a new mexico non resident who is filing an amended federal return. All went well with modifying it except for the New Mexico State return. My change was to contribute to a HSA - no changes to my New Mexico based income.

Form PIT-X is assessing nearly 20K in additional taxes on Line 18 than it should be. The problem appears to be that the proper tax shown on form PIT-B is not carrying over to Line 18 of PIT-X as it should be.

Anyone else facing same issue with their amended New Mexico State return?

BillM223

So you are having to allocate your NM income using form PIT-B? And was the PIT-B on your original return, but not on your amended return? Or is it on your amended return also?

Is there anything in the box on line 18a on your original PIT-1, like a "B"? How about on your PIT-X (line 18a)?

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desert crawlerAuthor

1. Yes I am allocating the New Mexico portion of my Income using PIT-B.

2. I made no changes to the New Mexico amount on the PIT-B when I was amending.

3.. The PIT-B does show on my amended return, with a different Federal Taxable amount (it went down). The PIT-X , and the original PIT-I does have a "B" on it, but it seems to be calculating my New Mexico tax tables applied to the entire Federal amount for the amended return, not the New Mexico portion of my income as allocated on the PIT-B (like it did on the original return)

BillM223

On the PIT-B, the tax is calculated by creating a ratio of NM income to federal income (line 12), then calculating the tax on the federal income (PIT-1, line 18) and multiplying that tax by the ratio (PIT-B, line 14). So, you are not taxed on your NM income, but on the federal income, then the tax is reduced by the ratio of NM income to federal income.

I am a bit concerned about your statement that the PIT-X is changing how it is calculating the tax. Can you give me some numbers?

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