topic How to do Deductible Home Mortgage Interest adjustment for California? in Deductions & credits

How to do Deductible Home Mortgage Interest adjustment for California?

askzy1 — Sun, 21 Mar 2021 20:22:29 GMT

Hi there! My questions is how do I make adjustment to deductible home mortgage interest for California, on CA form 540, Part II, Adjustments to Federal Itemized Deductions, line 8, column C

So my home mortgage has a principle over 1M. It started before 2017 December. For my federal return, TurboTax correctly calculated that the deductible interest amount is 1M / average principle * total interest paid.

For California state return, per the CA form 540 instructions (https://www.ftb.ca.gov/forms/2020/2020-540-ca-instructions.html, Line 8 – Home Mortgage Interest), I should be able to use 1.1M as allowed amount to calculate.

Among the final forms Turbotax exported, I can see that there is a "Deductible Home Mortgage Interest Worksheet" attached to CA state return, calculating a different dedictible interest amount based on 1.1M / average priciple * total interest paid. However, this calculated value is not used anywhere. The CA 540 instructions says "If your deduction was limited under the federal law, enter an adjustment on line 8, column C for the amount over the federal limit.", but column C is empty despite the worksheet included in the return.

Is there a way to fix this or override manually?

Re: How to do Deductible Home Mortgage Interest adjustment for California?

DaveF1006 — Sun, 21 Mar 2021 22:41:11 GMT

What is your average balance you are using in the calculation? I also can't find a Line 8 column C in worksheet unless it is referring to a third loan.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

askzy1 — Mon, 22 Mar 2021 00:41:30 GMT

Using 1.3M as average balance in calculation, federal return would allow 1/1.3 of total interest to be deductible, and supposedly California return would allow 1.1/1.3 of total interest to be deductible.

line 8 column C is part of CA form 540, mentioned in CA form 540 instructions in the link I posted. It says write the difference in column C which will add onto CA deductible.

The worksheet just calculated a higher deductible amount, but that amount or the difference isn’t used anywhere else in my return.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

DaveF1006 — Mon, 22 Mar 2021 00:55:35 GMT

Did you list equity debt in addition to your original loan debt? According to this State of California website, this deduction will allow deductions for home mortgage interest on mortgages up to $1 million plus up to $100,000 in equity debt. Do you have a second 1098 to report that is equity debt in addition to the 1098 for your original loan?

Re: How to do Deductible Home Mortgage Interest adjustment for California?

askzy1 — Mon, 22 Mar 2021 04:03:45 GMT

I do have a second 1098 from refinance, but I did not report it because TurboTax cannot handle 2 1098 at this time (see this thread https://ttlc.intuit.com/community/loans/help/what-do-i-do-if-i-have-multiple-1098s-from-refinancing-my-home-debt/01/1897136)

I manually merged the two 1098 forms and typed in only one.

> Did you list equity debt in addition to your original loan debt?

so no I did not. Also not sure if the refinance counts as home equity or not.

Even if this does not count and I should not get any extra deduction, it's odd that the final forms included a "Deductible Home Mortgage Interest Worksheet" for my California return, which calculated a higher deduction, yet does not use the value anywhere.. Is there a way to fix that odd form?

Re: How to do Deductible Home Mortgage Interest adjustment for California?

pa74 — Mon, 16 Oct 2023 07:14:21 GMT

Hi, I've had the same issue discussed in this thread, but I don't see a resolution.

Specifically, I have a grandfathered mortgage of about $1.5m. I'm allowed to deduct mortgage interest on upto $1m of the loan, so calculated 1/1.5 (67%) of the interest and entered that for my federal tax return.

On the CA taxes, there is a screen that allows you to made adjustments to the federal amounts. I use 1.1/1.5 (73%) of the interest paid for CA, however TT doesn't use this number in the CA adjustments page. It looks like a bug on the online TT version.

Can someone help?

Re: How to do Deductible Home Mortgage Interest adjustment for California?

dh123 — Mon, 26 Feb 2024 20:23:57 GMT

I'm having the same problem for 2023 year taxes.

If I go to California > Mortgage Interest Deduction and enter California adjustment amount, it doesn't appear on Schedule CA under Interest You Paid, 8a, Column C (Additions).

In tax year 2021 TurboTax online got this right. Looking at tax year 2022 and this year, it isn't putting anything in that box.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

LenaH — Wed, 06 Mar 2024 12:55:06 GMT

If you are still getting an error, it would be helpful to have a TurboTax ".tax2023" file that is experiencing this issue.

You can send us a “diagnostic” file that has your “numbers” but not your personal information. If you would like to do this, here are the instructions: Go to the black panel on the left side of your program and select Tax Tools.

Then select Tools below Tax Tools.
A window will pop up which says Tools Center.
On this screen, select Share my file with Agent.
You will see a message explaining what the diagnostic copy is. Click okay through this screen and then you will get a Token number.
Reply to this thread with your Token number. This will allow us to open a copy of your return without seeing any personal information.

@dh123

Re: How to do Deductible Home Mortgage Interest adjustment for California?

dh123 — Wed, 06 Mar 2024 17:09:20 GMT

Thank you LenaH, yes I am still having this problem.

My token number is 1203399.

I've called support many times and walked through debugging and we've tried a lot of different things:

* Reducing the balance of the mortgage but keeping the federal / state interest figures the same didn't change anything. e.g. it still doesn't let you add $100k of "equity debt" to CA.

* Clearing the state forms.

* Mucking around with other settings.

Basically no matter what you put in the "California Deduction" box for state mortgage interest and points, it never results in any additional interest being output in California Schedule CA "Column C (Additions). "

I went back and checked previous years returns and this worked in 2018, 2019, 2020, 2021, but not 2022 and 2023 tax years.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

LenaH — Wed, 06 Mar 2024 22:04:48 GMT

Thank you for sharing your token. I tested your file using TurboTax Desktop and will report your issue for further review.

I found that the California mortgage interest adjustment can be done in the Desktop version. Please see How do I switch from TurboTax Online to TurboTax Desktop? for instructions on downloading your tax file in TurboTax Desktop so you can complete your return.

Please take the following steps once you open your file in TurboTax Desktop:

Click on Forms at the top of the page in the blue bar.
On the left hand side, scroll down to your California forms.
Click on Schedule CA and scroll down to Line 8a.
Click on the box and a magnifying glass will appear. Click on the magnifying glass.
TurboTax will open the Misc. Deductions form.
Enter 4,767 (34,297 - 29,530) on the first line, which is Mortgage Interest Adjustment.
Go back to Schedule CA and confirm 8a, 8e, and 10 is 4,767.
Schedule CA now agrees to the 2023 Instructions for Schedule CA, which state if your deduction was limited under federal law, enter an adjustment on line 8, column C for the amount over the federal limit.

@dh123

Re: How to do Deductible Home Mortgage Interest adjustment for California?

dh123 — Wed, 06 Mar 2024 22:22:00 GMT

Hi LenaH, thank you... I have two questions:

1. I already paid for TurboTax Online... I didn't notice the issue until I had viewed the final preview tax forms pre-filing and see that the Column C isn't filled. This means I'll end up having to pay for TurboTax Desktop in addition just to fix the error in Online?

2. Will the workaround using Desktop prevent me from e-filing? I saw a help article that says, "Returns that contain overrides cannot be e-filed."

Is it possible they can fix whatever issue exists in TurboTax Online rather than having to switch to the Desktop mode? This functionality used to work in Online since I have never used Desktop and it correctly calculated the value in past tax years (e.g. 2018, 2019, 2020, 2021).

Re: How to do Deductible Home Mortgage Interest adjustment for California?

LenaH — Mon, 11 Mar 2024 13:31:25 GMT

If you decide to use TurboTax Desktop, you can request a refund of TurboTax Online once you transfer your file. To request a refund, please click here.

You are correct. Returns that contain overrides cannot be e-filed. For additional information, please click here.

This issue is currently being investigated. I will update you further when I receive more information. Thank you for your patience @dh123.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

smileyborg — Mon, 25 Mar 2024 06:23:25 GMT

I am encountering this exact issue with TurboTax Online.

I was auditing the completed tax return forms from TurboTax Online for 2023 before e-filing, and I noticed that the values I entered in the CA state specific "Mortgage Interest Adjustment" flow were not being reflected on the CA Form 540.

Then I went and looked at my 2022 forms (also filed via TurboTax Online), and I saw the exact same issue had happened there as well, but I had missed it last year! I confirmed that this was working correctly in TurboTax Online for 2021 and prior years.

So this seems to be a serious logic regression in TurboTax Online that was introduced last year (TY2022) and remains unfixed as of today for TY2023. This bug in the software is causing me to lose more than $2,500 of itemized deductions for my CA state taxes that I am supposed to receive every year!

See screenshots below showing the correct values I have entered into the TurboTax UI, and the incorrect tax forms generated:

Re: How to do Deductible Home Mortgage Interest adjustment for California?

SharonD007 — Mon, 25 Mar 2024 20:11:33 GMT

Please send a diagnostic file that has your input but not your personal information so we can evaluate.

Using TurboTax Online:

Sign into your TurboTax Online account
Scroll down to Tax Tools from the menu on the left side .
Select Tools from the drop-down
On the pop-up screen, select Share my file with agent
A message that a diagnostic file gets sanitized and transmitted to us appears
Reply to this thread with your Token number. This will allow us to open a copy of your return without seeing any personal information.

Using TurboTax Desktop/Download Versions:

Open your return.
Select the Online tab in the black bar at the top of TurboTax and select Send Tax File to Agent
This will generate a message that a diagnostic copy will be created. Click on OK and the tax file will be sanitized and transmitted to us.
Reply to this thread with your Token number. This will allow us to open a copy of your return without seeing any personal information.

@askzy1 @smileyborg

Re: How to do Deductible Home Mortgage Interest adjustment for California?

smileyborg — Tue, 26 Mar 2024 05:33:43 GMT

@SharonD007 I've already e-filed my return through TurboTax Online, so I don't see a way to get the token number without starting a new amended return. With that said, I really don't believe an investigation into my specific tax file is necessary, as I am clearly hitting the exact same issue that @dh123 encountered, which was already investigated by @LenaH. It's clear that there is a bug in TurboTax Online introduced in TY2022.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

LenaH — Wed, 03 Apr 2024 18:24:22 GMT

Thank you for your patience.

As per the Schedule CA instructions, California limits your mortgage interest paid deduction to the first mortgage debt of up to $1,000,000 for the purchase of the home, plus an additional $100,000 of home equity debt. In your situation, you have one mortgage and do not have home equity debt.

Since your mortgage debt was dated in 2015, the federal grandfathered limit is $1,000,000. Therefore, the deductible home mortgage interest of $29,530 on your federal return is the same amount that should be on your California return. No adjustment on Schedule CA is necessary in this situation.

@dh123

Re: How to do Deductible Home Mortgage Interest adjustment for California?

smileyborg — Thu, 04 Apr 2024 22:07:07 GMT

@LenaH The IRS clearly ruled that for home acquisition mortgages acquired prior to 2017, the mortgage interest deduction limit is $1,000,000 plus the $100,000 home equity debt limit (i.e. an effective limit of $1.1 million total), when the mortgage acquisition debt exceeds $1 million and the FMV of the home is at least as much as well. See IRS Revenue Ruling 2010-25 here: https://www.irs.gov/pub/irs-drop/rr-2010-25.pdf

The federal tax law changes for TY2018 suspended the extra $100,000 home equity debt limit for the mortgage interest deduction federal taxes, but California tax law does not conform to that change (as the Schedule CA instructions you linked explain). So the effective mortgage interest deduction limit for California state taxes remains $1.1 million for home acquisition mortgages dated prior to 2017.

In any case, the much more important point here is that TurboTax Online does not (and has never) performed the California state adjustment calculation here — TurboTax Online specifically requires the user to manually enter the mortgage interest deduction amount they want to use for California state taxes in the UI (see the screenshot I provided earlier in this thread). And prior to TY2022, that value was correctly used and reflected on the generated tax forms, but starting in TY2022 that no longer works. This is clearly a basic logic bug in the TurboTax Online software, where the user-entered value is being completely ignored and never used, and there is no way to work around this bug.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

dh123 — Thu, 04 Apr 2024 22:22:48 GMT

Yes, thanks @smileyborg. That's correct. I was writing a similar reply at the same time.

In 2009 the IRS issued a memo to give guidance on this issue. They said, "Indebtedness incurred by a taxpayer to acquire, construct, or substantially improve a qualified residence can constitute home equity indebtedness to the extent it exceeds $1 million (subject to the $100,000 and fair market value limitations imposed on home equity indebtedness by § 163(h)(3)(C))".
Previously, this applies to both Federal and CA, and there's no difference.
The Tax Cuts and Jobs Act (TCJA) signed into law on December 22, 2017 limited the federal home equity indebtedness deduction.
The CA FTB clarified that CA does not conform to these changes, leaving the previous status quo. It says, Federal law suspended the deduction on up to $100,000 ($50,000 for married filing separately) for interest on home equity indebtedness... California does not conform. If your deduction was limited under the federal law, enter an adjustment on line 8, column C for the amount over the federal limit."

Furthermore, the CA adjustment functionality worked in TurboTax online for TY2021, TY2020, TY2019, etc. So something broke.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

pkp2 — Mon, 07 Apr 2025 06:40:51 GMT

I have the exact same issue -- TT Online is not adding my mortgage interest to CA return. Can someone please help. I tried deleting and then recreating CA return and that does not help.

Re: How to do Deductible Home Mortgage Interest adjustment for California?

MonikaK1 — Mon, 07 Apr 2025 17:56:50 GMT

In most cases, you don't have to do anything in the California return with home mortgage interest - TurboTax has already made any needed changes.

Have you looked at your complete California return in TurboTax Online? You can do that if you have already paid for your TurboTax product. You can preview your return before filing to find out how your taxes were calculated. See here for details. Look at the Schedule A in the California return.

When you complete the California section in TurboTax Online, and you reach the screen, "Here's the income that California handles differently", one of the listed items, under Home, is Mortgage Interest Adjustment. The Learn More link next to that item states:

California does not conform to the new federal law that limits taxpayers to the interest on $750,000 ($375,000 for married filing separate) of home mortgage acquisition debt. California allows taxpayers to deduct interest on loans up to $1,000,000 ($500,000 for married filing separate). Additionally, federal law also limited the deduction on up to $100,000 for interest on non-acquisition (i.e. home equity) indebtedness, unless the loan was used to buy, build, or substantially improve your home that secures the loan. Important Note: This impacts loans originated on or after December 15th 2017. Loans originated prior to this date are grandfathered. In this situation, no adjustment would be necessary.

We've calculated the amount of deductible interest and points on acquisition debt, including the amount of the loan over $750,000 (but not over $1,000,000). In addition, the deductible amount includes any amount of non-acquisition loan interest you paid.

Why would I adjust my mortgage interest?

We have calculated your deductible California interest and points based on what's called the "Average of first and last balance method". If you paid your mortgage unevenly during the year, borrowed new amounts during the year, or would otherwise prefer to use another allowable method of calculating your interest, you may modify the mortgage interest adjustment.

If you have looked at your complete California return and there is NO mortgage interest on California Schedule A, please confirm.

@pkp2