This thread has been incredibly educational! I'm also helping structure a family loan and was initially attracted to Sophie's idea of deferring all interest to the end to minimize paperwork. But after reading everyone's experiences, it's clear that approach creates way more problems than it solves. The graduated payment structure that several people described seems like the perfect compromise - it acknowledges the reality of student finances while keeping everything legitimate in the IRS's eyes. I'm particularly impressed by how Logan and Giovanni structured their loans with built-in flexibility for missed payments and automatic transitions after graduation. One thing that really stands out is how important the documentation is. It sounds like having everything spelled out upfront - payment schedules, capitalization procedures, forbearance options - actually makes things simpler in the long run because there's no need for awkward family negotiations when circumstances change. Thanks to everyone who shared their real-world experiences and attorney advice. This has completely changed my approach from trying to be clever with payment timing to just keeping things straightforward and well-documented from day one!

This has been such a comprehensive discussion! As someone who's dealt with similar family lending situations, I wanted to add one more perspective that might be helpful for Sophie and others considering these arrangements. Beyond all the excellent tax advice shared here, don't underestimate the importance of setting clear expectations with all family members involved - not just the borrower and lender. In my experience, other family members sometimes develop opinions about loan terms, repayment progress, or fairness, especially during family gatherings when finances come up in conversation. I'd recommend having a brief family meeting (or at least informing close relatives) about the basic structure you've chosen and emphasizing that it's a legitimate business arrangement with proper documentation. This helps prevent well-meaning relatives from offering "advice" about forgiveness or payment modifications that could actually create tax complications. Also, consider setting up a simple tracking system from day one - even just a shared spreadsheet showing payment dates, amounts, and running balances. This transparency helps maintain trust and makes tax reporting much easier when the time comes. The IRS loves to see clear records, and it prevents any confusion about what's been paid or owed. The graduated payment structure with proper documentation that everyone's describing really is the way to go. It balances family flexibility with IRS compliance, and most importantly, it helps preserve family relationships by removing ambiguity about expectations and obligations.

Just wanted to add one more tip that helped me this year - if you're using TurboTax and have a lot of 1099 forms, take advantage of their "Import from Financial Institution" feature if your banks/brokerages support it. I was able to directly import data from 4 out of my 6 accounts, which automatically populated all the Schedule B information without any manual entry. For the two smaller credit unions that didn't support direct import, I still had to enter those 1099-INTs manually, but it cut down my data entry time significantly. The feature isn't available for every financial institution, but it's worth checking before you start manually typing everything. You can usually find it in the "Wages & Income" section where it asks about interest and dividends. Even if it only works for some of your accounts, every bit of automation helps during tax season!

Great thread with lots of helpful advice! I just wanted to add something that might help others who are dealing with multiple 1099 forms for the first time like the original poster. One thing I wish someone had told me when I first started getting multiple interest and dividend forms is to keep a running list throughout the year of any new accounts you open. It's easy to forget about that small savings account you opened in March or the investment account you funded in September, especially when the 1099s start arriving in January. I started keeping a simple note on my phone with account names and approximate balances, and it's been a lifesaver for making sure I don't miss any 1099s when they start arriving. Some smaller institutions can be slow to mail them out, and you don't want to file your return only to receive a "missing" 1099 a few days later. Also, if you're using TurboTax like the OP mentioned, their "tax document checklist" feature can help you track which forms you're expecting to receive. You can input your financial institutions at the beginning of tax season and it will remind you if you haven't entered a 1099 from an expected source.

Has anyone used TurboTax for this situation? I'm having the exact same problem but TurboTax doesn't seem to have anywhere to enter the different mortgages for different parts of the year...

I went through this exact scenario two years ago and found that the key is understanding that Pub 936's "average balance" calculation needs to be done month-by-month, not as simple annual averages. Here's what I learned from my CPA: For January-March, only your condo mortgage counts ($170k declining to ~$168k). For April-July, BOTH mortgages count toward your qualified loan limit since you owned both properties simultaneously. For August-December, only your house mortgage counts. The tricky part with MFS is that $550k limit. During your overlap months (April-July), your combined mortgage balances were probably around $1.55M, which far exceeds your limit. This means for those months, you can only deduct interest proportional to $550k/$1.55M ≈ 35.5% of the interest paid. My suggestion: Calculate your monthly qualified loan balances first, then determine what percentage of your total $42,300 in interest ($2,800 + $39,500) is actually deductible. You'll likely end up deducting around $18k-20k rather than the full amount. I'd also recommend attaching a clear explanation of your calculation to avoid any IRS questions later. This is a legitimate but complex situation that benefits from documentation.

This has been such a comprehensive discussion! As someone new to estate planning, I'm grateful for all the detailed explanations about how IRAs are treated for estate tax purposes. One thing I'm wondering about that I haven't seen mentioned - if your mom decides to make any Roth conversions in the coming years, how would that impact the estate tax calculation? I understand that Roth IRAs are still counted at full value for estate purposes, but would converting some of her traditional IRA assets to Roth potentially provide any benefits for your inheritance, even if it doesn't change the estate tax picture? I'm thinking about the income tax implications for you as the beneficiary - if she pays the conversion taxes now while she's in potentially a lower bracket, would that leave you with more tax-free inheritance later? Just curious if Roth conversions should be part of the estate planning conversation for someone in her situation.

This discussion has been incredibly thorough and helpful! As someone who went through a similar situation with my father's estate last year, I wanted to add one practical tip that saved me a lot of headaches. Consider asking your mom to consolidate her IRA accounts now if they're scattered across multiple institutions. I discovered after my dad passed that he had traditional IRAs at four different brokerages, each with slightly different beneficiary forms and distribution policies. Some hadn't been updated in over a decade. The consolidation process while she's alive is much simpler than trying to coordinate multiple inherited IRAs later. Plus, it ensures all the beneficiary designations are current and consistent. Most brokerages will handle the trustee-to-trustee transfers without any tax consequences, and having everything in one place makes the eventual inheritance process much smoother. Also, once consolidated, she could more easily implement some of the Roth conversion strategies mentioned above if that makes sense for her tax situation. Just something to consider as you help her get organized!

Letter 86C is definitely a relief! I remember getting one last year and being so confused by the official language, but it really is just their way of saying "all good, no issues found." One thing I'd recommend is setting up text alerts with your bank if you haven't already - that way you'll know the moment your refund hits. The IRS website also has a "Where's My Refund" tool that updates pretty regularly once they issue the letter. Hang in there, you're almost at the finish line!

Letter 86C is definitely a good sign! I went through this exact same situation last year and was panicking for no reason. The letter basically confirms they've completed their review and found no issues with your return. From my experience, once you receive the physical letter, your refund should be direct deposited within 10-21 days (mine took about 14 days). Pro tip: make sure your banking info is correct on file because any delays there could slow things down. You're almost done with this whole process - the hardest part (the waiting and worrying) is basically over!