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What is IHBG Formula?

Funds appropriated by Congress for the Indian Housing Block Grant Program (IHBG) are made available to eligible grant recipients through a formula. Regulations governing the formula can be found at 24 CFR Part 1000, Subpart D. On November 22, 2016, the Native American Housing Assistance and Self Determination Final Rule was published revising the IHBG Formula.

In brief, the formula has four components; Need, Formula Current Assisted Stock, 1996 Minimum, and Undisbursed IHBG funds factor. The Need component considers population, income, and housing conditions. The Formula Current Assisted Stock component reflects housing developed under the United States Housing Act (the predecessor of the IHBG program) which is owned and/or operated by the IHBG recipient and provides funds for ongoing operation of the housing. The 1996 minimum provides adjustments when an Indian tribe is allocated more or less funding under the IHBG formula than it received in FY 1996 for operating subsidy and modernization. The Undisbursed IHBG funds factor provides adjustments for tribes with an initial allocation of $5 million or more and has undisbursed IHBG funds in an amount greater than the sum of the prior three years’ initial allocation calculations.

An Indian tribe may challenge the Need portion of the IHBG formula provided the data are gathered, evaluated, and presented in a manner that is fair and equitable for all participating tribes. Tribes have until March 30 of each year to submit challenges to their Needs data in consideration for the upcoming fiscal year. Guidelines for submitting Census challenges are available below.

HUD has until June 1 of each fiscal year to report to recipients their annual IHBG estimated allocation and the data used to compute the estimated allocation. The Formula Response Form (FRF) is designated by 24 CFR 1000.302 as the form recipients use to report data changes to HUD. It is the recipients' responsibility to report any discrepancies or changes in their IHBG data to HUD. Tribes have until August 1st of each year to submit corrections to Formula Current Assisted Stock, Formula Area, Population Cap and Overlapping Formula Area data in consideration for the upcoming fiscal year. In accordance with Section 1000.315 the FRF is the only mechanism that a recipient shall use to report changes to the number of FCAS.

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IHBG Formula Estimates and Allocation by FY

Census Challenge Guidelines

Challenging the U.S. Census Data: Guideline for the Indian Housing Block Grant Formula Click Here and the following Appendices:

Contact the IHBG Formula Customer Service Center 1-800-410-8808 with questions.

ONAP is required to annually notify Indian tribes or their Tribally Designated Housing Entities (TDHEs) by June 1st of the data to be used for the IHBG formula. However, the required Census data needed for the Fiscal Year (FY) 2026 IHBG formula allocation was not available in time and this notification was delayed until August 1, 2024. Therefore, ONAP is extending the regulatory deadline for submitting documentation supporting Census challenges for the FY 2026 formula allocation from March 30, 2025, to May 29, 2025. This extension provides Indian tribes and TDHEs with a comparable amount of time as they had in prior fiscal years to review their Census data. The Census data that was used to estimate your Tribe’s FY 2025 IHBG formula allocation was posted online at https://ihbgformula.com/2025-needs-data/ on September 29, 2023.

Dear Tribal Leader Letter- IHBG Formula Census Challenge Deadline Date Change

The purpose of this Dear Tribal Leader letter is to inform Tribes and TDHEs that HUD is extending the deadline for FY 2026 Indian Housing Block Grant (IHBG) Formula Census Challenges from March 30, 2025 to May 29, 2025. Additionally, this letter announces that Tribes and TDHEs are now able to access their FY 2026 IHBG Formula Needs Data online here: https://ihbgformula.com/2026-needs-data/. 

The regulatory waiver that provides for the Census Challenge deadline extension is linked here: 2026 Census Challenge Regulatory Deadline

FY2020-FY2025

FY 2025 IHBG Formula Estimates

  • FY 2025 Estimate Cover Letter: The purpose of this Dear Tribal Leader letter is to inform Tribes and Tribally Designated Housing Entities (TDHE) of their Indian Housing Block Grant (IHBG) formula allocation estimate for Fiscal Year (FY) 2025 and to transmit the forms required for correcting the FY 2025 IHBG formula data and the FY 2026 IHBG Needs data.  In the past, the U.S. Department of Housing and Urban Development (HUD) would mail this information. HUD is posting the following information on-line at: https://ihbgformula.com/fy2025/:

    • FY 2025 Formula Response Form (FRF) including the FY 2025 FRF Appendices A through D.

    • Calendar of Critical Deadlines and Frequently Asked Questions.

    • FY 2025 Correction/Challenge Log showing changes to the IHBG database between April 15, 2024, and May 8, 2024.

Tribes/TDHEs must review their data on the FY 2025 Formula Response Form and report any changes no later than August 1, 2024, to the IHBG Formula Customer Service Center.

Census Challenges for the FY 2026 IHBG Needs data must be submitted no later than March 30, 2025, for consideration for the FY 2026 IHBG formula allocation estimates.  HUD does not have the most recent American Community Survey data published by Census in a form that is needed to calculate the IHBG formula allocations.  As a result, the FY 2026 Needs data will be published and distributed when it is available.  To provide Tribes and TDHEs with a comparable amount of time as they had in prior fiscal years to review their data, HUD is considering issuing a waiver extending the deadline for submitting the FY 2026 Needs data challenges to a later date.  Tribes and TDHEs will be notified should the waiver be issued.

FY 2024 IHBG Final Allocations

  • FY 2024 Final Cover Letter: The purpose of this Dear Tribal Leader letter is to inform Tribes and Tribally Designated Housing Entities (TDHE) of their Indian Housing Block Grant (IHBG) Final Allocation for Fiscal Year (FY) 2024. In the past, the U.S. Department of Housing and Urban Development (HUD) would mail this information. HUD is posting the following information on-line at: https://ihbgformula.com/final-allocation-forms-fy-2024/:

    • FY 2024 IHBG Allocation and Formula Data Sheets

    • FY 2024 Correction/Challenge Log showing changes to the IHBG database between May 5, 2023, and April 15, 2024.

Tribes/TDHEs must review their data on the FY 2024 IHBG Allocation and Formula Data Sheets and report any changes to the IHBG Formula Customer Service Center.  Census Challenges for the FY 2025 IHBG Needs data must be submitted no later than July 29, 2024, for consideration for the FY 2025 IHBG formula allocation.

FY 2024 IHBG Formula Estimates

  • FY 2024 Estimate Cover Letter:  The purpose of this Dear Tribal Leader letter is to inform Tribes and Tribally Designated Housing Entities (TDHE) of their Indian Housing Block Grant (IHBG) formula allocation estimate for Fiscal Year (FY) 2024 and to transmit the forms required for correcting the FY 2024 IHBG formula data and the FY 2024 IHBG Needs data.  In the past, the U.S. Department of Housing and Urban Development (HUD) would mail this information. HUD is posting the following information on-line at: https://ihbgformula.com/fy2024/:
  • FY 2024 Formula Response Form (FRF) including the FY 2024 FRF Appendices A through D.
  • Calendar of Critical Deadlines and Frequently Asked Questions.
  • FY 2024 Correction/Challenge Log showing changes to the IHBG database between February 13, 2023, and May 4, 2023.

Tribes/TDHEs must review their data on the FY 2024 Formula Response Form and report any changes no later than August 1, 2023, to the IHBG Formula Customer Service Center.  Census Challenges for the FY 2025 IHBG Needs data must be submitted no later than March 30, 2024, for consideration for the FY 2025 IHBG formula allocation estimates.

HUD is in the process of incorporating the 2020 U.S. Decennial Census data into the Needs data component in the IHBG formula allocation formula in the near future.  As a result, the FY 2025 Needs data will be published and distributed when it is available.  To provide Tribes and TDHEs with a similar amount of time as they had in prior fiscal years to review their data, HUD is considering issuing a waiver extending the deadline for submitting the FY 2025 Needs data challenges to a later date.  Tribes and TDHEs will be notified should the waiver be issued.

FY23 Final Allocations

  • FY 2023 Final Cover Letter: The purpose of this Dear Tribal Leader letter is to inform Tribes and Tribally Designated Housing Entities (TDHE) of their Indian Housing Block Grant (IHBG) Final Allocation for Fiscal Year (FY) 2023. In the past, the U.S. Department of Housing and Urban Development (HUD) would mail this information. HUD is posting the following information on-line at: https://ihbgformula.com/final-allocation-forms-fy-2023/:
    • FY 2023 IHBG Allocation and Formula Data Sheets
    • FY 2023 Correction/Challenge Log showing changes to the IHBG database between May 19, 2022, and February 13, 2023.

Tribes/TDHEs must review their data on the FY 2023 IHBG Allocation and Formula Data Sheets and report any changes to the IHBG Formula Customer Service Center. Please note the recent change of mailing address to the IHBG Formula Customer Service Center. Census Challenges for the FY 2024 IHBG Needs data must be submitted no later than March 30, 2023, for consideration for the FY 2024 IHBG formula allocation estimates.

FY 2023 IHBG Formula Estimates

Tribes/TDHEs must review their data on the FY 2023 Formula Response Form and report any changes no later than August 1, 2022, to the IHBG Formula Customer Service Center. Census Challenges for the FY 2024 IHBG Needs data must be submitted no later than March 30, 2023, for consideration for the FY 2024 IHBG formula allocation estimates.

FY 2022 IHBG Formula Final Allocation

FY 2022 Final Cover Letter: The purpose of this Dear Tribal Leader letter is to inform Tribes and Tribally Designated Housing Entities (TDHE) of their Indian Housing Block Grant (IHBG) Final Allocation for Fiscal Year (FY) 2022. This year, Tribes/TDHEs will not receive their IHBG FY 2022 final funding documents through the mail because of the COVID-19 National Emergency Instead, we are posting the following documents on-line at: https://ihbgformula.com/final-allocation-forms-fy-2022/

Tribes/TDHEs must review their data on the FY 2022 IHBG Allocation and Formula Data Sheets and report any changes to the IHBG Formula Customer Service Center. Please note that the recent change of mailing address to the IHBG Formula Customer Service Center.

The FY 2023 Formula Response Form is scheduled to be available on June 1, 2022, and the deadline to submit changes for the FY 2023 will be August 1, 2022. Census Challenges for the FY 2024 IHBG Needs data must be submitted no later than March 30, 2023, for consideration for the FY 2024 IHBG formula allocation estimates.

FY 2022 IHBG Formula Estimates

Tribes/TDHEs must review their data on the FY 2022 Formula Response Form and report any changes no later than August 1, 2021, to the IHBG Formula Customer Service Center.  Census Challenges for the FY 2023 IHBG Needs data must be submitted no later than March 30, 2022, for consideration for the FY 2023 IHBG formula allocation estimates.

FY 2021 IHBG-ARP Act of 2021 Funding Allocation

On March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 (ARP), Public Law 117-2, which provides additional funding to prevent, prepare for, and respond to the national impacts of the coronavirus pandemic. ARP included $450 million for the Indian Housing Block Grant program. Linked here you will find a funding summary for each eligible Tribe ("Indian Housing Block Grant- American Rescue Plan (IHBG-ARP) Formula Allocations").

The $450 million in funding was allocated based on the Fiscal Year (FY) 2021 tribal allocations. Each tribe will receive 69.1376421680391 percent of their FY 2021 IHBG formula allocation. This percentage is equal to the amount appropriated in the ARP divided by the total amount allocated in FY 2021 under the IHBG formula before repayments and grant adjustments ($450,000,00/ $650,875,537).

For more information on how your Tribe’s IHBG-ARP formula allocation was calculated, please see:
IHBG-ARP Funding Allocations

If you have any questions about your IHBG allocation under the ARP Act, please contact the IHBG Formula Customer Service Center at:

Phone: 1-800-410-8808
Email: IHBGformula@firstpic.org

FY 2021 IHBG Formula Final Allocation

Tribes/TDHEs must review their data on the FY 2021 IHBG Allocation and Formula Data Sheets and report any changes to the IHBG Formula Customer Service Center. Please note that the recent change of mailing address to the IHBG Formula Customer Service Center. The FY 2022 Formula Response Form is scheduled to be available on June 1, 2021, and the deadline to submit changes for the FY 2022 will be August 2, 2021.  Census Challenges for the FY 2022 IHBG Needs data must be submitted no later than March 30, 2021, for consideration for the FY 2022 IHBG formula allocation estimates.

FY 2021 IHBG Formula Estimates

  • Deadline Extended for Submitting FY 2021 Formula Response Corrections

    Due to difficulties some Tribes and Tribally Designated Housing Entities may be experiencing in submitting timely correction requests to FY 2021 Formula Response Form data caused by the COVID-19 pandemic, HUD is extending the deadline by an additional 30 days. Accordingly, all correction requests to the FY 2021 Formula Response Form data must be submitted by September 1, 2020. The September 1, 2020 deadline is important in ensuring that there is enough time to run the FY 2021 IHBG final allocations accurately and on time. We encourage Tribes and Tribally Designated Housing Entities that are able to submit their correction requests before September 1, 2020, to do so. Because of the timing needed to run the IHBG final allocations, we will not be able to offer any additional extensions beyond September 1, 2020.

    >Should you have any additional comments or questions, please contact the IHBG Formula Customer Service Center at:

    1875 Connecticut Avenue, NW, 10th Floor
    Washington, DC 20009
    Phone: 800-410-8808
    Fax: 202-393-6411
    E-Mail: IHBGformula@firstpic.org

    HUD looks forward to continuing to work with Tribes and Tribal organizations in FY 2021.
    Thank you for your efforts to support Tribal communities.

  • FY 2021 Estimate Cover Letter: The purpose of this Dear Tribal Leader letter is to inform Tribes and Tribally Designated Housing Entities (TDHE) of their Indian Housing Block Grant (IHBG) formula allocation estimate for Fiscal Year (FY) 2021 and to transmit the forms required for correcting the FY 2021 IHBG Formula data and the FY 2022 IHBG Needs data. In the past, the U.S. Department of Housing and Urban Development (HUD) would mail this information. However, due to the COVID-19 pandemic, HUD is posting the following information on-line at: https://ihbgformula.com/fy2021/

Tribes/TDHEs must review their data on the FY 2021 Formula Response Form and report any changes no later than September 1, 2020, to the IHBG Formula Customer Service Center. Census Challenges for the FY 2022 IHBG Needs data must be submitted no later than March 30, 2021, for consideration for the FY 2022 IHBG Formula allocation estimates.

FY 2020 IHBG-CARES Funding Allocation

On March 27, 2020, the President signed the Coronavirus Aid, Relief, and Economic Security (CARES) Act (P.L.116-136), which provides additional funding to prevent, prepare for, and respond to the national impacts of the coronavirus pandemic. The CARES Act included $200 million for the Indian Housing Block Grant program. Linked here you will find a funding summary for each eligible Tribe ("Indian Housing Block Grant CARES Act (IHBG-CARES) Formula Allocations").

The $200 million in funding was allocated based on the Fiscal Year (FY) 2020 tribal allocations before repayments and grant adjustments. Each Tribe will receive 30.5707842855989 percent of their FY 2020 IHBG formula allocation. This percentage is equal to the amount appropriated in the CARES Act divided by the total amount allocated in FY 2020 under the IHBG formula before repayments and grant adjustments ($200,000,000/$654,219,395).

For more information on how your Tribe’s IHBG-CARES formula allocation was calculated, please see:
IHBG-CARES Funding Allocations

If you have any questions about your IHBG allocation under the CARES Act, please contact the IHBG Formula Customer Service Center at:

Phone: 1-800-410-8808
Email: IHBGformula@firstpic.org

FY 2020 IHBG Final Allocation Summaries

FY 2020 IHBG Formula Estimates

FY2010-FY2019

FY2019 Final Allocations

FY 2019 IHBG Formula Estimates

FY 2018 IHBG Final Allocation Summaries

FY 2018 IHBG Formula Estimates

FY 2017 IHBG Final Allocation Summaries

FY 2017 IHBG Formula Estimates

FY 2016 IHBG Final Allocation Summaries

FY 2016 IHBG Formula Estimates

FY 2015 IHBG Final Allocation Summaries

FY 2015 IHBG Estimates

FY 2014 IHBG Final Allocation Summaries

FY 2014 IHBG Formula Estimates

FY 2013 IHBG Final Allocation Summaries

FY 2013 IHBG Formula Estimates

FY 2012 IHBG Final Allocation Summaries

FY 2012 IHBG Formula Estimates

FY 2011 IHBG Final Allocation Summaries

FY 2011 IHBG Formula Estimates

FY 2010 Final Allocation Summaries

FY 2010 IHBG Formula Estimates

FY2000-FY2009

FY 2009 Final Allocation Summaries

FY 2009 Formula Estimates

FY 2008 Final Allocation Summaries

FY 2008 IHBG Formula Estimates

FY 2007 Final Allocation Summaries

FY 2007 Estimate Summaries

FY 2006 Final Allocation Summaries

FY 2006 Estimated Summaries

FY 2005 Final Allocation Summaries

FY 2005 Estimated Summaries (Revised January 2005)

FY 2004 Final Allocation Summaries

FY 2004 Estimated Summaries

FY 2003

FY 2002

FY 2001

FY 2000

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