That's a really interesting point! I actually do have a home office I use for my side business that takes up about 15% of my house. If I'm replacing the HVAC system as part of this renovation, could I deduct 15% of that cost as a business expense then? Would the same apply to a roof replacement?

Yes, if you legitimately use that space exclusively as a home office for your business, you could potentially deduct 15% of the HVAC cost as a business expense. The IRS allows this when repairs/improvements benefit both personal and business parts of your home. For a roof replacement, the same principle applies - you could potentially deduct 15% of the cost. However, these would likely need to be depreciated over time rather than deducted all at once. Definitely keep detailed records of all costs and how you calculated the business percentage. This is definitely an area where good documentation is essential if you're ever audited.

This is such important advice! My brother just sold his house and wasn't able to prove about $30k in improvements he had made over the years because he didn't keep receipts. That's potentially thousands in extra taxes he had to pay.

Thanks for mentioning this! We actually have the option for both traditional and Roth 401k at our jobs. Sounds like with our income level, traditional might make more sense since we don't qualify for Form 8880 anyway?

Thanks for clarifying that! I've been trying to decide between traditional and Roth for my 401k contributions. My second question - does Massachusetts treat 401k contributions differently than the federal government for state income tax purposes?

This is a great point! I think a lot of people miss this. Increasing your traditional 401k contributions can sometimes make you eligible for other credits and deductions that have income limitations, not just potentially the Saver's Credit.

Thanks for all the great advice everyone! So just to make sure I understand: 1) We won't owe capital gains tax on the co-op sale since we've lived there over 2 years and the profit is well under the $500k married exclusion. 2) The gift from my parents and our gift back to them are separate transactions that may require gift tax forms but probably no actual tax. Does that sound right?

Yes, that's exactly right! You won't owe any capital gains tax on the co-op sale because you meet the primary residence requirements and your gain is well below the $500,000 exclusion for married couples. As for the gifts, they're indeed separate transactions. If any single person gives more than $17,000 to another individual in a year, the giver needs to file Form 709 (Gift Tax Return). But this is just for reporting purposes - no actual tax would be due unless someone has already used up their lifetime gift exemption of over $12 million. For example, if your parents are married and gave you $75,000, they could structure it as each giving $17,000 to both you and your wife ($68,000 total) without even needing to file Form 709, with only $7,000 counting against their lifetime exemption.

Do HOA special assessments count toward basis? Our co-op had a major plumbing project and we paid about $8k in special assessments over the years.

If you know someone hasn't been paying taxes for years, can you report them anonymously? Asking for a neighbor who brags about this constantly while driving his new boat...

Yes, you can report suspected tax fraud using IRS Form 3949-A, or by calling the IRS Tax Fraud Hotline. These reports are kept confidential, and you can submit them anonymously, though providing your information might help if the IRS needs clarification (they won't disclose your identity to the person you're reporting). That said, be careful about reporting based solely on someone's bragging. Sometimes people who talk about "not paying taxes" are exaggerating or might actually mean they found legal deductions that reduced their tax bill to zero. The IRS has limited resources and false reports can waste those resources. But if your neighbor is clearly living beyond their means while claiming to evade taxes, that combination of factors might interest the IRS.

So what happens if you file but don't pay for several years? Do they eventually garnish wages or just keep sending letters forever?

Thanks for mentioning Form 8594. I had no idea about that! If I'm getting some proprietary processes along with the customers, would those be classified differently than just the customer list? And do you know if there's a minimum value threshold for filing Form 8594?

Proprietary processes would likely be classified as "Section 197 intangibles" similar to goodwill, which means they'd also be amortized over 15 years. They might be allocated to a different asset class on Form 8594, but the tax treatment would be similar. There's no minimum threshold for filing Form 8594. If you're acquiring business assets that constitute a trade or business, you need to file it regardless of the amount. The IRS wants to ensure that both buyer and seller are treating the transaction consistently.

This is exactly right. I did something similar a few years ago and got hit with a surprise tax bill because I didn't realize I needed to claim the value of the assets I received as immediate income. Make sure you set aside money for the taxes!