Bernalillo Property Tax: Rates, Deadlines & Appeals (2026)

Bernalillo County’s 2026 Notice of Value appeal deadline was May 1, 2026: the Assessor mailed 2026 NOVs on April 1, and New Mexico gives owners 30 days from mailing to file a protest. File with the Bernalillo County Assessor, not the Treasurer: use the online protest portal/code on your NOV, email assessor@bernco.gov, mail PO Box 27108, Albuquerque, NM 87125, or go in person to 415 Silver Ave. SW, Albuquerque, NM 87102.

How assessments work in Bernalillo County

Bernalillo County property taxes start with the Assessor’s full value of your property as of January 1, 2026. New Mexico then taxes only one-third of that value: the NOV calls this “taxable value.” Your bill is based on net taxable value after exemptions, multiplied by the combined mill rate for your tax district.

For 2026, Bernalillo County’s April 1 notice campaign told owners that NOVs were being mailed by the Assessor and that the notice shows assessed value, ownership information and exemptions. State law requires county assessors to mail notices by April 1; a protest petition is due 30 days after the assessor mails the notice in ordinary cases.

The Assessor must value property at its “current and correct” value, but New Mexico has a residential cap: for most continuing residential owners, value generally cannot exceed the higher of 103% of last year’s value or 106.1% of the value two years earlier. That cap does not protect you in the first year a property is valued, after a change of ownership, after use/zoning changes, or for new non-solar improvements. This is why new buyers in Albuquerque often see a much larger reset than longtime neighbors.

Bernalillo’s 2025 certified rates are the latest final countywide rate certificate available during the 2026 appeal season. For a typical residential property inside Albuquerque Public Schools and the City of Albuquerque, DFA’s certificate shows a 48.323 mill total in district 12 IN R / A1AMC-style Albuquerque residential areas when AMAFCA, MRGCD and Ciudad SWCD apply. Rates vary: unincorporated APS areas can be lower, Tijeras/Rio Rancho/Moriarty districts differ, and PIDs can add special assessments.

Whether you should appeal

Appeal if the full value is above what your home would likely have sold for around January 1, 2026, or if the Assessor’s record is wrong. Good Bernalillo-specific evidence includes:

• comparable sales from your same part of Albuquerque, Los Ranchos, Tijeras, the East Mountains or the South Valley;
• proof the county has the wrong square footage, building count, garage/carport, condition, or land size;
• closing documents if you bought recently for less than the noticed value;
• photos and contractor estimates for condition problems the mass appraisal likely missed.

Do not appeal only because the bill is high. The Valuation Protests Board reviews value, classification, allocation, exemptions and valuation-limit denials—not whether APS, UNMH, CNM, AMAFCA or MRGCD taxes feel too expensive.

Worked savings example: suppose an Albuquerque homeowner in a 48.323-mill district receives a 2026 full value of $450,000, but strong comparable sales support $420,000. The disputed reduction is $30,000 full value. New Mexico taxes one-third, so taxable value drops by about $10,000. At 48.323 mills, estimated annual savings are $10,000 × 48.323 ÷ 1,000 = $483.23. If the value carries forward, the benefit can matter beyond one bill, though future rates and values can change.

Published countywide success rates or median reductions were not found in official Bernalillo County or New Mexico sources. Be skeptical of private companies’ advertised success rates unless they show audited Bernalillo-only results.

Step-by-step how to file

1. Read the NOV first. Find the UPC/parcel number, full value, taxable value, exemptions, tax district, protest deadline and the Online Protest Access Code printed on the notice.

2. Get the form. Bernalillo County directs owners to bernco.gov/assessor/protest-process for the protest process and form. State law calls the filing a petition; the county commonly calls it the Protest Form or Protest Petition. If an agent files for you, include the county’s agent authorization documentation.

3. State the value you believe is correct. New Mexico law requires the petition to identify the property, explain why the Assessor’s value/classification/exemption decision is wrong, state what you believe is correct, and state what is not in dispute.

4. Attach evidence. Put your best three to six comps first. Label photos and repair estimates. If the record is wrong, include a survey, appraisal sketch, permit record or other proof.

5. File by the deadline. For 2026 regular real-property NOVs, the practical deadline was May 1, 2026. Filing methods listed by the county include: online portal using the NOV access code; email to assessor@bernco.gov; mail to Office of the Assessor, PO Box 27108, Albuquerque, NM 87125; or in person at 415 Silver Ave. SW, Albuquerque, NM 87102. No Assessor protest filing fee is published; a standard valuation protest is treated as free to file. Court refund claims or later court appeals are different and can involve court costs.

What happens after

After a timely petition, the Assessor schedules the matter for the Bernalillo County Valuation Protests Board. State law requires notice by certified mail at least 15 days before the hearing. The Assessor may also offer an informal conference first. Take that seriously: many fixable errors are resolved there by agreement before a board hearing.

The formal hearing is not a courtroom trial, but it is a real evidentiary hearing. Technical rules of evidence do not apply, testimony is under oath, and a verbatim record is made. The usual order is: you identify the property and issue, present testimony and documents, then the Assessor presents its evidence; the board may allow closing statements. The Assessor’s value is presumed correct, so the homeowner must bring enough evidence to overcome it.

There is no Bernalillo-published “paper-only” substitute that automatically replaces the hearing. The closest non-oral path is a signed settlement/stipulation after an informal review; otherwise, expect to appear or have an authorized representative appear.

The board may announce a result orally, but the appealable decision is the written order. State law says the written order is due within 30 days after the hearing unless extended by agreement, and all protests must be decided within 180 days of filing. If you lose, a district-court appeal generally must be filed within 30 days of the board’s order.

Local tips

Check exemptions before arguing value. The Head of Family exemption is a $2,000 reduction of taxable value for qualifying New Mexico residents. Veterans may qualify for a much larger veteran exemption; New Mexico’s veteran exemption increased to up to $10,000 of taxable value beginning with recent law changes, and 100% disabled veterans may qualify for a full property-tax waiver on a principal residence.

If you are 65 or older or disabled, ask about the Value Freeze. For the 2026 tax year, statewide county materials show a $44,200 modified gross income limit for the prior year. The freeze is on value, not the tax bill; your bill can still change when mill rates change. The application deadline generally tracks the NOV window, so missing May 1 can cost a year.

New homeowners should use the Assessor’s tax estimator cautiously. Bernalillo’s own calculator warns that estimates may not include exemptions or special districts such as PIDs, TIFs or TIDDs, and the Assessor may value at current and correct value even if that differs from the listed or purchase price.

Finally, keep paying the Treasurer on time while a protest is pending. Bernalillo property taxes are billed later by the Treasurer, commonly due in two installments: November 10 and April 10 of the following year, with delinquency dates after December 10 and May 10. A value protest does not automatically pause payment obligations.

Bernalillo County Property Tax Rate

No single countywide property-tax millage applies in Bernalillo County; the latest official New Mexico DFA TY2025 certificate lists residential grand-total mill levies by tax district, including 48.323 mills for 12 IN R (Albuquerque), 38.216 mills for 12 OUT R, 31.696 mills for 12 IN LR R (Los Ranchos), 31.089 mills for 12 IN T R (Tijeras), and 27.747 mills for 8T R (Rio Rancho); the residential county component is 8.357 mills in most districts and 8.416 mills for 2A IN R.

Source: https://www.nmdfa.state.nm.us/wp-content/uploads/2026/05/Bernalillo-County-2025-rev-Sept-19-2025.pdf

When Are Property Taxes Due in Bernalillo County?

Property taxes are due in two installments: first half due November 10 and delinquent after December 10; second half due April 10 of the following calendar year and delinquent after May 10. Taxes may be paid in full or in two installments; Bernalillo County also references a 10-month payment agreement for enrolled taxpayers.

This is not the same as the assessment appeal deadline above. The appeal deadline is your window to contest your assessed value; the payment due date is when the resulting tax bill must be paid. Missing one does not affect the other, but missing either has real consequences — one forfeits your right to appeal for the year, the other can trigger penalties and interest.

Source: https://www.bernco.gov/treasurer/paying-your-property-taxes-overview/

Property Tax Exemptions in Bernalillo County

• Head-of-Family Exemption — A New Mexico resident who owns residential property and is a head of a family, including a married person (only one spouse per household), widow/widower, head of household supporting a related person by more than half, single person (only one per household), or qualifying condominium-association member paying property tax through the association.. Up to $2,000 deducted from taxable value to determine net taxable value. Yes, file proof of eligibility with the county assessor; once granted, it need not be re-applied for unless eligibility, ownership, or status changes. Apply by No later than 30 days after mailing of the county assessor’s notice of valuation for that tax year.. (Source: https://www.tax.newmexico.gov/businesses/wp-content/uploads/sites/4/2021/02/Property-Tax-Code-Rev.-05-20.pdf)
• Veteran Property Tax Exemption — A New Mexico resident veteran who was honorably discharged and meets service requirements, or the veteran’s un-remarried surviving spouse.. Up to $10,000 of taxable value; amount is scheduled to adjust for inflation in 2026 and later years. Yes; apply for a certificate through New Mexico Department of Veterans Services and file with the County Assessor. Apply by No later than 30 days after mailing of the county assessor’s notice of valuation for that tax year, unless a different current county/state instruction applies.. (Source: https://www.nmdvs.org/wp-content/uploads/2025/08/100023_DVS_DVS1_VeteransExemption_Fillable.pdf)
• Disabled Veteran Property Tax Exemption — A New Mexico resident veteran honorably discharged from the U.S. armed forces, determined under federal law to have a service-connected disability, and occupying the property as the veteran’s principal place of residence; qualifying un-remarried surviving spouses may also qualify.. Exemption from taxable value equivalent to the veteran’s VA service-connected disability rating percentage. Yes; submit application to New Mexico Department of Veterans Services and file the certificate/application with the County Assessor. (Source: https://www.nmdvs.org/wp-content/uploads/2025/08/100023_DVS_DVS1_VeteransExemption_Fillable.pdf)
• Value Freeze / Limitation on Increase in Value for Low-Income Owners Age 65+ or Disabled — Owner-occupants of a single-family dwelling who are age 65 or older or disabled and whose prior-year modified gross income does not exceed the inflation-adjusted state limit.. Limits valuation for property-tax purposes so it does not exceed the assessed valuation for the tax year in which the owner qualifies and files; it is a valuation freeze/limitation, not a mill-rate reduction. Yes; file proof of eligibility with the County Assessor. After filing and proving income eligibility for three consecutive years, the limitation may be applied automatically while eligibility continues. Apply by No later than 30 days after the assessor mails the notice of valuation.. (Source: https://www.tax.newmexico.gov/businesses/wp-content/uploads/sites/4/2021/02/Property-Tax-Code-Rev.-05-20.pdf)

How to Look Up Your Property Record in Bernalillo County

You can look up your property's official record at https://assessor.bernco.gov/public.access/search/commonsearch.aspx?mode=realprop. The Bernalillo County Assessor public-access property record search shows parcel/property records used to identify, classify, value, and apply legal exemptions to real and personal property.