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Form 14900: Worksheet for Qualified Loan Limit and Deductible Home Mortgage Interest for Tax Years Beginning after 2017
Treasury Form 14900 is a Worksheet for Qualified Loan Limit and Deductible Home Mortgage Interest for Tax Years Beginning after 2017, used by taxpayers to calculate deductibles. It determines the qualified loan limit based on debt incurred before or after December 16, 2017.
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IRS Form 14900 - Worksheet for Qualified Loan Limit and Deductible Home Mortgage Interest for Tax Years Beginning after 2017
Treasury Form 14900 is a Worksheet for Qualified Loan Limit and Deductible Home Mortgage Interest for Tax Years Beginning after 2017, used by taxpayers to calculate deductibles. It determines the qualified loan limit based on debt incurred before or after December 16, 2017.
Risk Radar
Scan points- 1Ensure you correctly choose the proper debt amounts for Line 6 vs. Line 9 when determining your qualified loan limit.
- 2Failing to include grandfathered debt from mixed-use mortgages on Line 1.
- 3Using the wrong threshold amounts for line 3 ($1,000,000 vs. $500,000 if married filing separately).
- 4Incorrectly determining Line 6 when home acquisition debt after Dec 15, 2017, is present.
- 5Not including all interest payments on Line 13 (e.g., forgetting non-Form 1098 interest).
Plain English
This worksheet helps determine how much of your mortgage interest you can subtract from your taxable income. It calculates a maximum 'qualified loan limit' and then uses that to find the exact amount of home mortgage interest that qualifies for deduction on Schedule A.
Submission Date
- Filing date: 2024-12-04 22:11:03
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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What this form is for
- Use this form when calculating your Qualified Loan Limit and Deductible Home Mortgage Interest for tax years beginning after 2017.
- Do not use this form when you do not have qualified homes or are filing a year before 2018 (though the instructions cover pre-2018 scenarios).
- Check Schedule A (Form 1040 or Form 1040-SR) instead when reporting the final deductible amount.
Form selector
Use this form or another form?
Taxpayers filing Married Filing Separately
The initial loan limits are reduced by half ($500,000 vs $1,000,000) for the qualified loan limit calculation.
✓ Verify line 3 amounts.
Taxpayers with no home acquisition debt after 12/15/2017
If this condition is met and the resulting amount on line 6 is $750,000 or more, the qualified loan limit is determined by line 6.
✓ Confirm lines 6, 8, and 11.
Taxpayers who paid interest not covered by Form 1098
Any other interest payments on debts secured by a qualified home must be manually added to the amount reported on line 13.
✓ Ensure all qualifying interest is captured on Line 13.
Deadline or filing window
This worksheet applies to Tax Years Beginning after 2017. The instructions do not specify a filing deadline, but interest paid must be reported on Schedule A (Form 1040 or Form 1040-SR).
Checklist
What you need before filling it out
Line 1 (Grandfathered Debt)
Average balance of all mortgages on Oct 13, 1987 · Part I
Line 2 (Pre-Dec 16, 2017 Acquisition Debt)
Total average balance of home acquisition debt incurred prior to Dec 16, 2017 · Part I/Page 2
Line 3 (Base Limit)
$1,000,000 (or $500,000 if married filing separately) · Part I
Line 6 (Qualified Loan Limit Check)
Smaller of Line 4 or Line 5 amounts · Part I
Line 13 (Total Interest Paid)
Total amount of interest paid on loans from Line 12 · Part II
Line 14 (Deduction Ratio)
Result of dividing Line 11 by Line 12, rounded to three decimal places · Part II
Before you submit
- 1Enter the average balance for grandfathered debt on line 1.
- 2Input the total of pre-December 16, 2017 home acquisition debt on line 2.
- 3Confirm the correct base limit amount is entered on line 3 ($1,000,000 or $500,000).
- 4Verify that Line 6 represents the smaller of Line 4 (Grandfathered) or Line 5 (Total Debt).
- 5Ensure total interest paid from all qualified mortgages is correctly entered on line 13.
- 6Check that the deductible home mortgage interest amount is placed on line 15, not line 16.
- 7Confirm that if Line 11 $ge$ Line 12, you stop at Part II and do not proceed to lines 13-16.
How to file this form
- 1Calculate and enter the total average balance of grandfathered debt on line 1.
- 2Determine and input the total average balance of home acquisition debt incurred prior to December 16, 2017, onto line 2.
- 3Complete Part I by determining your qualified loan limit (line 11) based on whether you have post-December 15, 2017 debt.
- 4Calculate the total interest paid from all mortgages included in line 12 and enter it on line 13.
- 5Multiply the amount on line 13 by the ratio calculated on line 14 to find your deductible home mortgage interest (line 15).
- 6Sign and date the Form 14900 before mailing or submitting a copy for record-keeping.
Known limitations
- 1The worksheet calculates interest that is deductible as home mortgage interest on Schedule A (Form 1040 or Form 1040-SR).
- 2If line 11 of the IRS Form 14900 is less than line 12, the taxpayer must proceed to line 13.
- 3If line 11 equals or exceeds line 12, all interest on the mortgages included in line 12 is deductible as home mortgage interest.
- 4Interest calculated on line 16 of IRS Form 14900 is not considered home mortgage interest and is not deductible.
Field map
Compact field-by-field guide
General Info
2 items
Full legal name and taxpayer identification number (SSN or EIN).
Current mailing address.
Details
2 items
Complete all applicable sections of this form according to the official IRS instructions.
Enter the relevant dollar amount if this form involves tax calculation.
Certification
1 items
Read and acknowledge any certifications required by this form.
Signatures
1 items
Sign and date. Unsigned forms cannot be processed.
Almost done reviewing the fields?
Fillable formOpen in Editor->The current edition is July 2020 (7-2020). The source does not point to a specific page for the latest information, but it provides instructions for Tax Years Beginning after 2017.
What changed or needs a fresh check
- Edition date — confirm the revision date reads July 2020 (7-2020).
- Catalog Number — confirm the number reads 70235R.
- Taxpayer Name — ensure the name matches the filer's legal name.
- TIN Last 4 Digits — verify the last four digits of the Tax Identification Number are entered correctly.
- Filing Status/Year — confirm the Year/Period ended field is accurately filled out.
Quick Facts
Downloads
After you file
- 1Keep a copy of the completed IRS Form 14900 for record-keeping.
- 2Enter the final calculated amounts from this worksheet onto Schedule A (Form 1040 or Form 1040-SR).
- 3If calculating interest that is not deductible, ensure the amount on line 16 of IRS Form 14900 is properly recorded as personal interest.
- 4The determination of whether interest is personal depends on whether any mortgage proceeds were used for business, investment, or other deductible activities (as noted in line 16 instructions).
Sources
- SRCForm 14900 is a Worksheet for Qualified Loan Limit and Deductible Home Mortgage Interest for Tax Years Beginning after 2017 (p.1).
- SRCThe form's Catalog Number is 70235R (p.1, p.2).
- SRCLine 1 requires entering the average balance of all grandfathered debt (debt from October 13, 1987) (p.1, p.2).
- SRCThe standard loan limit on Line 3 is $1,000,000 ($500,000 if married filing separately) (p.1).
- SRCLine 6 is the qualified loan limit if you have no home acquisition debt after Dec 15, 2017, or if that debt amount is $750,000 ($375,000 if married filing separately) or more (p.1).
- SRCLine 13 requires entering the total interest paid on loans from line 12, and this should be sourced from Form 1098 or a similar statement (p.1, p.2).
Common confusion points
What amount goes on Line 3?
This represents the standard maximum loan limit. It is $1,000,000 unless the taxpayer is married filing separately, in which case it is $500,000.
→ Verify this specific dollar amount based on your filing status.
When should you use Line 7 instead of stopping at Line 6?
You must go to line 7 if you have home acquisition debt incurred *after* December 15, 2017.
→ Check the dates of all your home acquisition debts against December 15, 2017.
How do I know my interest is personal (not deductible)?
If you did not use any proceeds from the mortgages listed on line 12 for business, investment, or other deductible activities, the interest on line 16 is personal.
→ Review your mortgage usage against the list of all outstanding mortgages on line 12.
What does Line 13 include?
It requires the total amount of interest paid on the loans listed in line 12. This should be sourced from Form 1098 or a similar statement, plus any other payments not shown on Form 1098.
→ Confirm that points and mortgage insurance premiums are *not* included in this total.
What is the difference between Line 6 and Line 11?
Line 6 is the qualified loan limit if you meet certain criteria (no debt after Dec 15, 2017, or debt $ge$ $750k/$375k). Line 11 is the final qualified loan limit, which is the smaller of the amounts on line 9 or line 10.
→ Compare your calculated values for lines 6 and 11 to ensure they match your situation.
When must you use Line 2 instead of just using the general debt figures?
You must use Line 2 if you entered a written binding contract before December 15, 2017, to close on your main home before January 1, 2018, and purchased it before April 1, 2018.
→ Check these specific contract/purchase dates against the required thresholds.
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- Form 1098 — This document provides the interest amount that should be entered on line 13 of IRS Form 14900.
Questions about IRS Form 14900
What is IRS Form 14900 used for?
This worksheet helps determine how much of your mortgage interest you can subtract from your taxable income. It calculates a maximum 'qualified loan limit' and then uses that to find the exact amount of home mortgage interest that qualifies for deduction on Schedule A.
Who must file IRS Form 14900?
Taxpayers must use Form 14900; this worksheet is used by those filing taxes who have mortgages on qualified homes.
What information does IRS Form 14900 require?
Part I identifies the Qualified Loan Limit, using average balances from grandfathered debt (line 1) and home acquisition debt. Part II calculates the Deductible Home Mortgage Interest based on these figures.
When is IRS Form 14900 due?
The worksheet is used for Tax Years Beginning after 2017; specific deadlines are not stated in the instructions, but interest paid must be reported.
How do I complete IRS Form 14900?
First, complete Part I by calculating lines 1 through 16 to find your qualified loan limit. Then, proceed to Part II by entering total average balances on line 12. Finally, use lines 13 through 16 to calculate the final deductible amount before transferring it to Schedule A.
What happens if IRS Form 14900 is filed incorrectly?
If calculations are incorrect, the resulting deductible home mortgage interest amount entered on Schedule A may be too high or too low.
What amount goes on Line 3?
This represents the standard maximum loan limit. It is $1,000,000 unless the taxpayer is married filing separately, in which case it is $500,000. Verify this specific dollar amount based on your filing status.
When should you use Line 7 instead of stopping at Line 6?
You must go to line 7 if you have home acquisition debt incurred *after* December 15, 2017. Check the dates of all your home acquisition debts against December 15, 2017.
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