To get the fair market value of property for taxes, order a qualified appraisal from a state-licensed or certified appraiser. The IRS treats a qualified appraisal as the authoritative record of value for charitable donations of property, for setting the tax basis of inherited real estate, and for defending against valuation penalties. Tax assessor records and real estate agent estimates are useful benchmarks, but they do not satisfy the IRS when a dollar figure has to hold up on a return.
Fair market value itself is the price your property would sell for on the open market when both buyer and seller are reasonably informed, acting voluntarily, and free from pressure to close. That is the standard the IRS applies, and it is the standard an appraiser is trained to document.
When the IRS Requires a Qualified Appraisal
Three tax situations drive most requests for a formal valuation of real estate.
Charitable Donations Over $5,000
If you donate property other than cash or publicly traded stock and claim a deduction of more than $5,000, the IRS requires a qualified appraisal, and you must attach the appraisal information to your return on Form 8283.1Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts When the claimed deduction exceeds $500,000, a copy of the full qualified appraisal must be attached to the return.2Internal Revenue Service. Charitable Organizations – Substantiating Noncash Contributions Skip the appraisal and the deduction is at risk.
Inherited Property and Step-Up in Basis
When you inherit real estate, the tax basis is generally reset to the property’s fair market value on the date the previous owner died, not what they originally paid.3Internal Revenue Service. Gifts and Inheritances That “step-up” can dramatically reduce your capital gains tax when you eventually sell. Establishing the date-of-death value with an appraisal protects that basis figure years down the line, when memories and market data have faded.
An executor may instead elect an alternate valuation date six months after the date of death, but only if an estate tax return is filed and the election is made on that return.4Office of the Law Revision Counsel. 26 US Code 2032 – Alternate Valuation The 2026 federal estate tax exemption is $15,000,000 per person, so estates below that owe no federal estate tax.5Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Even so, the heir still needs a date-of-death value to calculate future capital gains, which means an appraisal is worth ordering even when no estate tax is due.
Penalty Protection
Reporting an inaccurate fair market value on a return carries real financial exposure. A substantial valuation misstatement triggers a penalty of 20 percent of the underpaid tax. If the misstatement is classified as gross, the penalty doubles to 40 percent.6Office of the Law Revision Counsel. 26 US Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments The penalties apply whether you overstated a charitable donation or underreported the value of estate property. A qualified appraisal is the strongest protection against them.
What a Qualified Appraisal Involves
Appraisers are licensed and certified at the state level. Their education, experience, and examination requirements are set under the framework created by the Financial Institutions Reform, Recovery, and Enforcement Act.7Office of the Law Revision Counsel. 12 USC 3331 – Purpose Every appraiser must follow the Uniform Standards of Professional Appraisal Practice, which sets ethical obligations, objectivity requirements, anti-discrimination standards, and specific reporting formats.8Appraisal Institute. State Agencies and Regulatory Boards For IRS purposes, hiring someone who meets these standards is what makes the appraisal “qualified.”
The work starts with an on-site inspection that typically lasts 30 to 60 minutes. The appraiser examines interior and exterior, checks construction quality, looks at major systems like roofing and HVAC, and notes any visible structural or safety concerns. After the visit, the appraiser spends several days analyzing market data, applying valuation methods, and writing the report.
A standard residential appraisal typically costs between $525 and $800. Complex properties, rural locations, or homes in high-cost markets can push the fee above $1,000. That fee covers the inspection, market research, and the legal liability the appraiser assumes for the accuracy of the report. Compared to a 20 percent or 40 percent penalty on underpaid tax, the appraisal fee is small.
The Three Valuation Approaches You’ll See in the Report
Appraisers and the IRS recognize three main methods for valuing real estate, and most appraisals combine them rather than relying on a single one.9Internal Revenue Service. Publication 561 – Determining the Value of Donated Property
- Sales comparison. The appraiser finds recently sold properties similar to yours and adjusts for differences in size, condition, location, and features. A comparable home with a two-car garage, for example, gets a downward adjustment when measured against a home without one. This is the dominant approach for residential property.
- Cost approach. The appraiser estimates what it would cost to rebuild the home from scratch at current prices, subtracts depreciation for age and wear, and adds the land value. Most useful for newer construction or unusual properties with few comparable sales.
- Income approach. For rental or investment property, the appraiser calculates value from the income the property produces, using net operating income and a capitalization rate that reflects expected returns for that property type in your area.
Residential appraisals lean heavily on sales comparison because owner-occupied homes do not generate rental income and comparable sales are widely available. When you read the report, expect the sales comparison figure to carry the most weight.
What Assessor Records and Agent Estimates Are Good For
Two cheaper sources of property valuation come up often, and both have limits worth understanding before you rely on them for a tax filing.
Your local tax assessor maintains a public record of your property’s assessed value, typically searchable online by address or parcel number. Assessors generally update these values every one to three years depending on local rules, so the number can lag current market conditions. Many jurisdictions also apply an assessment ratio rather than taxing full market value. If your ratio is 70 percent and your assessed value is $210,000, the implied market value is $300,000. That gives you a rough benchmark, but it will not reflect recent interior renovations, shifts in buyer demand, or neighborhood price changes, and the IRS will not accept it as a qualified appraisal.
A Comparative Market Analysis, or CMA, is a report a real estate agent prepares by examining active listings and recent sales similar to your property. The agent selects comparables based on bedroom count, age, style, and proximity, then applies dollar adjustments for differences. The output is a suggested listing price, not a certified appraised value. A CMA is a strategic tool for pricing a sale. It does not carry the legal weight the IRS requires for a donation, an estate, or a defense against valuation penalties.
If you believe the assessor’s number is too high and your local property tax bill is inflated as a result, most jurisdictions let you file a formal appeal with a local review board. Filing fees for these appeals range from nothing to several hundred dollars depending on where you live. That is a separate process from establishing fair market value for a federal tax return.
Documents to Gather Before the Appraiser Arrives
Every professional valuation starts with correctly identifying your property. Pull together:
- The original deed or a recent title report, which contains the legal description that distinguishes your lot from every other parcel in the county. Deeds describe property using lot and block references, boundary measurements, or a combination.10Legal Information Institute (LII) / Cornell Law School. Deed
- Your Assessor’s Parcel Number, which appears on your property tax bill and lets any professional pull the correct public records.
- Building permits documenting the square footage of living areas and any additions.
- Receipts for capital improvements like a kitchen renovation, roof replacement, or new windows, so the appraiser understands how your home compares to similar properties without those upgrades.
- A recent survey or floor plan from the local planning department if you have one.
The more documentation you hand over at the start, the more accurate the report and the less back-and-forth you’ll deal with later. For a donation or an estate filing, keep a copy of everything the appraiser used, along with the final report, in case the IRS asks.