Which state are you in? I'm in California and haven't even looked into the state requirements yet. Do you file W2s with the state tax agency separately?

I'm in New York, but most states have their own requirements. In California, you'd need to submit your W-2s to the Employment Development Department (EDD), not just the federal SSA. California actually has some of the stricter penalties for late filing - they can charge $50 per W-2 plus potentially 10% of the tax that was withheld if you're very late. Their deadline is the same as the federal one (January 31st), but the submission process is completely separate. Check the California EDD website for their specific filing instructions.

Are those services expensive? I only have 2 part-time employees and do everything manually because I thought payroll services were overkill.

Thanks for mentioning this! I would have totally messed that up. Do you know if I need to include all the original attachments again or just the ones I'm changing?

You only need to include the forms and schedules that you're changing with your Form 1040X. So definitely the Schedule C for your business expenses, but if you're not changing other aspects of your return, you don't need to include those other forms again. Also, you'll need to file a separate 1040X for each tax year you're amending. Don't try to combine multiple years on one form - the IRS will reject it.

Good advice. Also worth noting that the IRS generally has 10 years from the date of assessment to collect taxes owed. So depending on exactly when these returns were filed/assessed, the collection statute of limitations might be approaching.

Wouldn't using an LLC mean losing the mortgage interest deduction? I thought you could only deduct mortgage interest on your primary residence if you personally own it, not if it's owned by an LLC?

You're right to question this - an LLC typically would cause you to lose the mortgage interest deduction for a personal residence. What we actually did was create a partnership agreement rather than a full LLC (I simplified in my original comment). The partnership agreement gives us similar protections in terms of clearly defining ownership and responsibilities, but allows the property to remain in our personal names for tax purposes. This way we each get to deduct our portion of the mortgage interest while having clear documentation of our arrangement. Tax rules around entity structures can get complicated, so definitely consult with a tax professional before going this route.

I don't think that's correct. The annual gift tax exclusion is $17,000 per person for 2023 (probably higher for 2025), and it's only an issue if you exceed that amount. Plus, you'd have to file a gift tax return but probably wouldn't owe any actual tax unless you've used up your lifetime exemption, which is over $12 million.

This is super helpful! I like your approach with the business name format. One follow-up question - when you split the Schedule Cs between spouses, do you also split the expenses proportionally? Or can one spouse claim certain categories of expenses while the other claims different ones?

I split both income and expenses proportionally based on our work contribution percentage. So if we're doing a 60/40 split, each Schedule C shows that percentage of both the revenue and expenses. You could technically allocate specific expense categories to each spouse if those expenses directly relate to their specific duties, but that gets messy and might invite more scrutiny. The proportional approach is simpler and generally easier to defend if questioned.

Rev. Proc. 2002-69 is specifically about community property states, which OP mentioned they're not in. It allows married couples in community property states to treat their wholly-owned LLC as either a disregarded entity or partnership. Since OP is in a non-community property state, this wouldn't apply directly to their situation.

Thank you for this suggestion. I did actually meet with HR yesterday and showed them that I've started the process. They were more understanding than my direct manager and said they mainly need to see proof that I've engaged with a tax professional and have a concrete plan. Did you use a special type of tax person for your situation? I'm wondering if I need someone who specializes in delinquent returns.

I used an Enrolled Agent who specialized in tax resolution and delinquent returns. They tend to be more affordable than CPAs while still having full representation rights with the IRS. The key is finding someone who regularly handles past-due filings rather than just normal tax prep. I recommend asking specifically about their experience with employment verification issues and their typical timeline for preparing delinquent returns. My EA was able to provide a formal letter stating I had retained their services and outlining our filing plan, which satisfied my employer while we completed the actual work. Most tax pros who work in this area understand the employment implications and can help document your progress for HR.

This is so important! I had the same issue with state taxes being overlooked. And if you had self-employment income, some cities and local jurisdictions also require tax filings. For example, I had to file a city income tax return for my freelance work that I didn't even know existed until I got a notice.