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Nonprofit · EIN 46-1580680

MACK FOUNDATION

Tax-exempt · BAINBRIDGE IS, WA 98110

Financials

$69K$243K2024$181K$323K2025
Revenue Expenses · by fiscal year end
Financials of MACK FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-PF$180,671$323,230-$142,559$1,875,564$0$1,875,564
December 31, 2024990-PF$69,005$243,322-$174,317$2,018,123$0$2,018,123
Financial details: 990-PF for the year ended December 31, 2025

Revenue

Dividends
$50,425
Net gain from sales of assets
$130,246

Expenses

Grants and similar amounts paid
$314,000
Disbursements for charitable purposes
$323,230
Excise tax on investment income
$2,383

Balance sheet and other

Total assets, start of year
$2,018,123
Total assets, end of year
$1,875,564
Total liabilities, end of year
$0
Net assets, end of year
$1,875,564
Fair market value of assets
$2,697,966
Qualifying distributions
$323,230
Net investment income
$180,671

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-PF for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
ROBERT BMACK
11752 ARROW POINT DRIVE, BAINBRIDGE ISLAND, WA 98110
TRUSTEE0$0
990-PF for the year ended December 31, 2024: 1 people
NameTitleHours / weekCompensation
ROBERT BMACK
11752 ARROW POINT DRIVE, BAINBRIDGE ISLAND, WA 98110
TRUSTEE0$0

Address and contacts

Address (IRS master file)
11752 ARROW POINT DR NE, BAINBRIDGE IS, WA 98110-1425
Signed the 990-PF
ROBERT BMACK, TRUSTEE
Phone
(206) 714-9075
Return prepared by
SMITH & DEKAY CPAS

What it must file and when

IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-PF on file
2024December 31, 2024May 15, 2025990-PF on file
2023December 31, 2023May 15, 2024990-PF on file

IRS record

EIN
46-1580680
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Private non-operating foundation
Donations deductible (Pub 78)
Private foundation, 30% limit
Exempt since
2014
Accounting year ends
December
Files
Form 990-PF
Assets (IRS master file)
$1,875,564
Income (IRS master file)
$563,363

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFDecember 2025$180,671$323,230$1,875,564XML
990-PFDecember 2024$69,005$243,322$2,018,123XML
990-PFDecember 2023$50,011$163,927$2,192,440IRS
990-PFDecember 2022–––IRS
990-PFDecember 2021–––IRS
990-PFDecember 2020–––IRS
990-PFDecember 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 46-1580680).

Questions about MACK FOUNDATION

What is the EIN of MACK FOUNDATION?
The employer identification number (EIN) of MACK FOUNDATION is 46-1580680.
Is MACK FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2014.
Are donations to MACK FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does MACK FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of MACK FOUNDATION due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MACK FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-PF for the year ended December 2025.
Who are the officers and directors of MACK FOUNDATION?
The 990-PF for the year ended December 31, 2025 lists 1 person; 0 received compensation from the organization.
How much revenue does MACK FOUNDATION have?
On its 990-PF for the year ended December 31, 2025 it reported revenue of $180,671, expenses of $323,230 and total assets of $1,875,564 at year end.

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