Choosing the Deduction Method That Fits Your Tax Return

A couple reviews tax forms, donation receipts, and mortgage records at a kitchen table.

For residents of Farmington, NM, the choice between the standard deduction and itemized deductions can affect how much income is subject to federal income tax. The standard deduction is a fixed amount based mainly on filing status, while itemizing requires adding specific eligible expenses on Schedule A.

The correct choice is generally the method that produces the larger allowable deduction, although certain taxpayers must itemize or may benefit from itemizing for state-tax reasons. ([irs.gov](https://www.irs.gov/publications/p501?utm_source=openai))

What is the standard deduction?

The standard deduction is a set amount that reduces taxable income without requiring taxpayers to list individual expenses. It is usually simpler because there is no need to total qualifying medical bills, charitable gifts, mortgage interest, or certain taxes for the federal return.

For tax year 2025, the basic federal standard deduction is:

  • $15,750 for single taxpayers and married couples filing separately
  • $23,625 for heads of household
  • $31,500 for married couples filing jointly and qualifying surviving spouses

For tax year 2026, the amounts increase to $16,100, $24,150, and $32,200, respectively. Tax year 2026 returns are generally filed in 2027. ([irs.gov](https://www.irs.gov/newsroom/irs-releases-tax-inflation-adjustments-for-tax-year-2026-including-amendments-from-the-one-big-beautiful-bill?utm_source=openai))

The standard deduction may be higher for taxpayers who are age 65 or older or legally blind. Beginning with tax year 2025, some older taxpayers may also qualify for an enhanced senior deduction subject to income limits. ([irs.gov](https://www.irs.gov/publications/p501?utm_source=openai))

What are itemized deductions?

Itemized deductions are specific expenses that may be claimed separately on Schedule A of Form 1040. Instead of accepting one fixed amount, the taxpayer totals allowable expenses and claims the combined amount.

Potential categories include:

  • State and local income or sales taxes
  • Real estate and certain personal property taxes
  • Mortgage interest
  • Eligible charitable contributions
  • Unreimbursed medical and dental expenses above the applicable income threshold
  • Certain federally recognized disaster losses
  • Limited gambling losses, when properly documented and connected to gambling winnings

Each category has its own rules, limits, and documentation requirements. An expense is not deductible merely because it was necessary, expensive, or personally meaningful. ([irs.gov](https://www.irs.gov/taxtopics/tc501?utm_source=openai))

Which deduction is usually better?

A taxpayer should compare the total allowable itemized deductions with the available standard deduction. If itemized deductions are lower, the standard deduction will generally provide the larger federal tax benefit. If itemized deductions are higher, itemizing may reduce taxable income more.

For example, suppose a married couple filing jointly has these potentially itemized expenses for 2025:

  • $12,000 in qualifying mortgage interest
  • $8,000 in state and local taxes, subject to applicable limits
  • $4,000 in qualifying charitable contributions
  • $3,000 in eligible medical expenses after the applicable threshold

If the allowable total is $27,000, the couple would generally compare that amount with the $31,500 standard deduction. Based on those figures alone, the standard deduction would be larger.

A different household with substantial mortgage interest, charitable giving, qualifying medical expenses, and deductible taxes might exceed the standard deduction and benefit from Schedule A.

The comparison must use allowable amounts, not simply the household’s total spending.

How can local household circumstances affect the decision?

Housing patterns can make the comparison different from one household to another. A homeowner with a mortgage may have deductible interest, while a renter generally will not claim rent as a federal itemized deduction. Property taxes may be relevant, but state and local tax deductions are subject to federal limitations.

Seasonal conditions can also affect expenses. For example, a household may have unusual medical costs, storm-related damage, or other expenses during a particular year. Those costs only qualify if they meet federal requirements and are not reimbursed by insurance or another source.

Charitable contributions may also be significant for some local households, especially when several years of planned giving occur in one tax year. Cash gifts and donated property have different substantiation requirements, and larger noncash gifts may require additional records or appraisals.

Photo by Giorgio Tomassetti on Unsplash
Photo by Giorgio Tomassetti on Unsplash

Does owning a home automatically make itemizing better?

No. Homeownership alone does not guarantee that itemizing will produce a larger deduction.
Mortgage interest and certain taxes may be deductible, but the total must be compared with the standard deduction. A homeowner with a small mortgage balance, limited interest, and few other qualifying expenses may still receive a larger deduction by taking the standard deduction.
Mortgage payments should also be separated into their components. Principal payments generally are not deductible as itemized deductions, while qualifying interest may be. Home improvements, insurance premiums, utilities, repairs, and ordinary maintenance are generally not personal itemized deductions.

What records are needed for itemizing?

Good records help establish both the amount paid and the fact that the expense qualifies. Depending on the deduction, useful documents may include:

  • Mortgage interest statements
  • Property-tax and other tax-payment records
  • Donation receipts and written acknowledgments
  • Medical invoices and insurance reimbursement records
  • Records supporting disaster-related losses
  • Bank or credit-card statements showing payment

For charitable gifts, a bank record or receipt may be required even for smaller cash contributions, and written acknowledgment rules apply to larger gifts. Records should be retained with the tax file according to applicable federal recordkeeping guidance.

Can married couples choose different methods?

Generally, spouses filing a joint federal return use the same deduction method because they file one return. Married couples filing separately face additional restrictions. If one spouse itemizes on a separate return, the other spouse generally cannot use the standard deduction. ([irs.gov](https://www.irs.gov/publications/p501?utm_source=openai))
This rule can make filing-status decisions more complicated. The federal result should be reviewed together with any state filing requirements rather than evaluated in isolation.

Are federal and New Mexico deductions the same?

Not necessarily. A federal deduction choice does not automatically determine the best treatment on a New Mexico return. State tax rules, forms, adjustments, and conformity with federal law can differ by tax year.
A household in Farmington should check the instructions for the specific New Mexico tax year being filed, especially when the federal standard deduction is larger but state itemized deductions could produce a different result. The IRS also recognizes that, in limited situations, a taxpayer may elect to itemize federally even when itemized deductions are below the federal standard deduction if doing so provides a greater overall state-tax benefit. ([irs.gov](https://www.irs.gov/publications/p501?utm_source=openai))

What is the practical decision process?

A useful comparison follows four steps:
1. Identify the correct federal filing status and any additional standard deduction amounts for age or blindness.
2. List potentially itemized expenses paid during the tax year.
3. Remove expenses that are nondeductible, reimbursed, below applicable thresholds, or limited by federal rules.
4. Compare the allowable itemized total with the standard deduction for that tax year.

Taxpayers should also consider whether a spouse files separately, whether someone else can claim them as a dependent, and whether a state return changes the overall calculation. The larger deduction is usually the better federal choice, but the final decision depends on the complete return rather than one expense category. ([irs.gov](https://www.irs.gov/publications/p501?utm_source=openai))

Thomas Stamper

About the Author

Thomas Stamper

Thomas Stamper is a CPA and Certified Tax Resolution Consultant serving individuals and small businesses in Farmington, New Mexico. Through Alpha Omega Accounting PC, he helps clients understand complex tax matters, respond to IRS and state tax issues, prepare taxes, address audits, and develop practical strategies for managing tax obligations.