Yes—you can mail your husband’s own signed Form 1040-X and corrected return, or hire another preparer willing to handle the paper amendment.

Start here

Get the original return and the right year’s forms

Use the original return and any IRS adjustment to establish what was already reported. Download the current [paper Form 1040-X](https://www.irs.gov/pub/irs-pdf/f1040x.pdf) and its [instructions](https://www.irs.gov/instructions/i1040x). If amending **2025**, use the [2025 Form 1040](https://www.irs.gov/pub/irs-prior/f1040--2025.pdf) for the attached corrected return; for an earlier year, use that year’s Form 1040 and schedules from the [IRS prior-year forms collection](https://www.irs.gov/prior-year-forms-and-instructions). Do not substitute a 2025 return for an older tax year. ([Form 1040-X instructions](https://www.irs.gov/instructions/i1040x))

Before signing

Recalculate and fill in both returns

On Form 1040-X, select married filing separately, enter your spouse’s name below the filing-status boxes, and—**only if she has no SSN or ITIN and is not required to have one**—write “NRA” next to her name there. Complete the corrected same-year Form 1040 as MFS. On Form 1040-X, use column A for the original or IRS-adjusted amounts, B for changes, and C for the corrected amounts. In Part II, explain: “Changing filing status from Single to married filing separately,” with the spouse-ID facts that actually apply. Attach the corrected Form 1040 and any schedules that changed. ([Form 1040-X instructions](https://www.irs.gov/instructions/i1040x))

After the calculations

Sign, copy, and mail the paper package

Your husband should hand-sign Form 1040-X; mail it with the corrected return behind it. Use the **address on an IRS notice** if this amendment responds to one. Otherwise, the [Form 1040-X instructions’ mailing table](https://www.irs.gov/instructions/i1040x) gives: **Austin, TX 73301-0052** for AL, AR, FL, GA, LA, MS, OK, TX; **Ogden, UT 84201-0052** for AK, AZ, CA, CO, HI, ID, IA, KS, MI, MT, NE, NV, NM, ND, OH, OR, SD, UT, WA, WY; **Kansas City, MO 64999-0052** for CT, DE, DC, IL, IN, KY, ME, MD, MA, MN, MO, NH, NJ, NY, NC, PA, RI, SC, TN, VT, VA, WV, WI. Address it to **Department of the Treasury, Internal Revenue Service**. The instructions instead specify **Austin, TX 73301-0215** for a foreign-country, U.S.-territory, or APO/FPO address and certain other special returns, including an amended Form 1040-NR. If the correction increases tax, pay the amount due; the [IRS payment instructions](https://www.irs.gov/instructions/i1040x) describe electronic payment and payment with the paper return.

Alternative to doing the forms yourselves

Contact a preparer if you want help instead

Use the [IRS credentialed-preparer directory](https://irs.treasury.gov/rpo/rpo.jsf) to find local candidates. Ask: “Will you prepare a **paper Form 1040-X** changing Single to MFS, attach the corrected return, handle an eligible nonresident spouse ‘NRA’ entry, sign with your PTIN, give us copies, and quote the price?” If free assistance fits, use the [VITA site locator](https://freetaxassistance.for.irs.gov/s/sitelocator) or call **800-906-9887**, and ask whether that site handles amendments for his tax year and paper filing. ([IRS choosing a tax professional](https://www.irs.gov/tax-professionals/choosing-a-tax-professional); [Form 1040-X instructions](https://www.irs.gov/instructions/i1040x); [IRS free tax preparation](https://www.irs.gov/individuals/free-tax-return-preparation-for-qualifying-taxpayers))

After mailing

Monitor the amendment

Use the IRS [Where’s My Amended Return?](https://www.irs.gov/filing/wheres-my-amended-return) tracker. The IRS says an amendment can take up to about three weeks to appear in its system; keep your mailing and return copies while it is pending. ([IRS amended-return FAQ](https://www.irs.gov/filing/amended-return-frequently-asked-questions))