Worked example
Deduction Example: A Homeowner Near the Itemizing Break-Even Point
Avery and Morgan, a fictional married couple filing jointly, own a home and have several possible Schedule A categories in 2026. They want to know whether the receipts justify a closer itemized review. This is an illustrative 2026 scenario, not personal tax advice.
10 minute read · 2026 U.S. federal tax
Follow the numbers
Apply itemized category limits
- 1Build standard path
- 2Apply itemized category limits
- 3Compare resulting federal tax
The planning question behind the numbers
Avery and Morgan, a fictional married couple filing jointly, own a home and have several possible Schedule A categories in 2026.
They want to know whether the receipts justify a closer itemized review. The filing-status context is Married Filing Jointly, and every tax value uses the 2026 production calculation.
Scenario profile
They want to know whether the receipts justify a closer itemized review.
Avery and Morgan, a fictional married couple filing jointly, own a home and have several possible Schedule A categories in 2026.
Married Filing Jointly
Prepared inputs, grouped by role
Income context
- $165,000 AGI, including $3,000 qualified dividends and $8,000 net long-term gain
Supported categories
- $18,000 medical costs and $2,000 reimbursements
- $12,000 state income tax, $9,000 real-estate tax, and $500 personal-property tax
- $10,500 mortgage interest
- $5,500 cash and noncash charity
Inputs the fictional taxpayer has prepared
The scenario uses the same inputs accepted by the calculator. No deduction, credit, basis amount, or eligibility conclusion is created inside the example.
- $165,000 AGI, including $3,000 qualified dividends and $8,000 net long-term gain
- $18,000 medical costs and $2,000 reimbursements
- $12,000 state income tax, $9,000 real-estate tax, and $500 personal-property tax
- $10,500 mortgage interest
- $5,500 cash and noncash charity
Follow the calculation from input to result
TaxArith passes the fixture through calculateStandardVsItemizedDeduction. The values below use the site’s production formatting.
Production calculation journey
Values are generated by calculateStandardVsItemizedDeduction.
calculateStandardVsItemizedDeduction
- 1. Standard deduction path$34,200.00
- 2. Allowed medical deduction$3,625.00
- 3. Allowed SALT deduction$21,500.00
- 4. Final itemized deductions$40,300.00
- 5. Tax with standard path$17,430.00
- 6. Tax with itemized path$16,088.00
- 7. Estimated tax savings from selected path$1,342.00
Paid expenses do not all become deductions: reimbursements, the medical floor, the income-versus-sales-tax choice, and other limits act first.
Change one input and watch the consequence
If deductible mortgage interest is $14,500 instead of $10,500:
Base case versus one changed input
If deductible mortgage interest is $14,500 instead of $10,500
Base case
Estimated tax savings from selected path
$1,342.00One-input change
Alternative estimated path savings
$2,222.00If deductible mortgage interest is $14,500 instead of $10,500
The result changes only if the higher amount is independently supportable and deductible under the mortgage-interest rules.
Before you use the estimate
- Recreate the example only with records that support your own inputs.
- Keep the same filing status and tax year when comparing the published numbers.
- Change one material input at a time and read the full breakdown.
- Review the stated limitations before using the estimate.
Where this estimate stops
- This comparison does not establish Schedule A eligibility, optional sales-tax table amounts, mortgage limits, disaster qualification, or state-tax effects.
- The fictional facts illustrate production logic and do not establish eligibility, filing treatment, or a recommended action for any reader.
Sources and references
Only the primary federal sources used for the rules discussed in this guide are listed here.
- Revenue Procedure 2025-32
Internal Revenue Service · The inflation-adjusted 2026 ordinary brackets, standard deductions, preferential-rate thresholds, and other indexed amounts used by the applicable calculation.
- Publication 505 (2026)
Internal Revenue Service · The current-year deduction and tax-planning context used by the comparison.
- 2026 Schedule A
Internal Revenue Service · Draft—verify the final version before filing. The available 2026 Schedule A category structure; it was draft when reviewed and must be checked against the final form.
TaxArith provides illustrative 2026 U.S. federal tax estimates for general information. It is not tax, legal, financial, or investment advice and does not prepare or file a return. Results depend on the accuracy and completeness of the submitted facts.