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OrganizationsFiler-reported accounting context

Institute returns state their accounting and assurance limits

Period or event: Calendar tax years 2021–2024 · Reviewed September 12, 2026 · Record r4-institute-accounting-basis-and-limits-2021-2024

Each acquired 2021–2024 Form 990 selects accrual accounting and answers No to independent compilation or review and to an independent audit. The returns classify reported net assets as without donor restrictions, while the with-donor-restrictions line is blank. These balance-sheet categories do not disclose the terms or use of any particular campaign gift.

What the source records

EIN
813250230
Accounting method
Accrual in 2021, 2022, 2023 and 2024Part XII, line 1; checked input reviewed.
Independent compilation or review
No in each of the four returnsPart XII, line 2a.
Independent audit
No in each of the four returnsPart XII, line 2b. This does not establish that an audit was legally required.
Federal-award audit requirement
No in each of the four returnsPart XII, line 3a; the limited question printed on the return, not a conclusion about all possible audit duties.
Net assets without donor restrictions, year end
2021: $336,074; 2022: $212,708; 2023: $46,632; 2024: $165,879Part X, line 27, column B.
Net assets with donor restrictions
Opening and closing cells blank in each of the four returnsPart X, line 28. This is not proof that every gift was unconditional or unrestricted throughout the year.
Deferred revenue
Opening and closing cells blank in each of the four returnsPart X, line 19.
Document availability statement
Available upon requestSchedule O, Part VI, line 19, in each return. No request or outreach was made.

Scope & limitations

  • These are recipient organization accounts, not Bernie Sanders personal income. No particular incoming payment is traced into compensation or other expenses.
  • A blank cell is retained as blank, not converted into an explicit reported zero. Dates in this record identify fiscal-period ends, not payment dates.
  • An independent audit, a compilation/review and preparation of an IRS return are different activities. The No answers do not establish that financial statements were never prepared or that any filing requirement was breached.
  • Year-end net-asset categories do not identify donors, earmarks, conditional promises, restrictions satisfied during the year, or which gifts funded particular spending.
  • No receipt-level ledger, donor agreement, bank reconciliation or detailed financial-statement notes were acquired. The public index reviewed on September 12, 2026 displays 2024 as the latest tax year; no 2025 recipient return was located in that index.

Sources for this record

Sanders Institute — 2021 IRS Form 990 (object 202233199349329578)

ProPublica Nonprofit Explorer rendering of IRS-released filer Form 990 · primary-filing-mirror · Checked 2026-09-12

Part I summary, balance sheet, and Part VII executive compensation where present. Object ID 202233199349329578

Hash covers rendered filing content at https://projects.propublica.org/nonprofits/full_text/202233199349329578/IRS990

Source receipt SHA-256de3b12c2fb5eaec5e7398466a40dd4c13faad81e58dd5b7e685f6187426a5ed4

Sanders Institute 2021 Schedule O · supplemental explanations

Sanders Institute filing / IRS public-release mirror (ProPublica) · IRS-released original filer return rendering · Checked 2026-09-12

Schedule O supplemental explanations; Part VI line 19 document-availability statement

Original public IRS-rendered response acquired and hashed in memory. Selected organization accounting fields retained; unrelated personal/contact fields and donor Schedule B identities are not retained. Blank fields remain blank; the date used by linked records is a tax-period-end marker.

Source receipt SHA-2563713ed14de8d4ed57c20b844ee786013de07520532adf78c272f53ef6d7d1aa0

Sanders Institute — 2022 IRS Form 990 (object 202333199349320708)

ProPublica Nonprofit Explorer rendering of IRS-released filer Form 990 · primary-filing-mirror · Checked 2026-09-12

Part I summary, balance sheet, and Part VII executive compensation where present. Object ID 202333199349320708

Hash covers rendered filing content at https://projects.propublica.org/nonprofits/full_text/202333199349320708/IRS990

Source receipt SHA-2567a75a854babf6324f9ecdb97a853482a44963d5f9e1c998596867293e02cc907

Sanders Institute 2022 Schedule O · supplemental explanations

Sanders Institute filing / IRS public-release mirror (ProPublica) · IRS-released original filer return rendering · Checked 2026-09-12

Schedule O supplemental explanations; Part VI line 19 document-availability statement

Original public IRS-rendered response acquired and hashed in memory. Selected organization accounting fields retained; unrelated personal/contact fields and donor Schedule B identities are not retained. Blank fields remain blank; the date used by linked records is a tax-period-end marker.

Source receipt SHA-25610a1c11c8950321523ca91ae9995f0fd86f4cfe00e304d93abd57f59c717707d

Sanders Institute — 2023 IRS Form 990 (object 202423209349327217)

ProPublica Nonprofit Explorer rendering of IRS-released filer Form 990 · primary-filing-mirror · Checked 2026-09-12

Part I summary, balance sheet, and Part VII executive compensation where present. Object ID 202423209349327217

Hash covers rendered filing content at https://projects.propublica.org/nonprofits/full_text/202423209349327217/IRS990

Source receipt SHA-2566b9fbae3cea519539953e4236544714e1b271c1bcc117f00934f60fd25bdc735

Sanders Institute 2023 Schedule O · supplemental explanations

Sanders Institute filing / IRS public-release mirror (ProPublica) · IRS-released original filer return rendering · Checked 2026-09-12

Schedule O supplemental explanations; Part VI line 19 document-availability statement

Original public IRS-rendered response acquired and hashed in memory. Selected organization accounting fields retained; unrelated personal/contact fields and donor Schedule B identities are not retained. Blank fields remain blank; the date used by linked records is a tax-period-end marker.

Source receipt SHA-256f687f62b96a27cec340d61aeb0f5c583f652af27b68b5268ab758a11efd9b0da

Sanders Institute — 2024 IRS Form 990 (object 202523219349323472)

ProPublica Nonprofit Explorer rendering of IRS-released filer Form 990 · primary-filing-mirror · Checked 2026-09-12

Part I summary, balance sheet, and Part VII executive compensation where present. Object ID 202523219349323472

Hash covers rendered filing content at https://projects.propublica.org/nonprofits/full_text/202523219349323472/IRS990

Source receipt SHA-256c81ace503f3ea81e3d7a35aa2a8d3e67ddb72b60adcefe266238a6e32c23eb75

Sanders Institute CY2024 Schedule O: governance procedures

IRS filing via ProPublica · primary-filing-mirror · Document date 2025-11-17 · Checked 2026-09-12

Object 202523219349323472; Part VI lines 11b, 12c and 15a explanations

Date is the submission date in the source rendering. Reported governance procedures are not independently tested. Original response processed in memory; privacy-minimized derivative retained.

Source receipt SHA-256c63a8bafc3843470327709f3206eb14a0f6ccfff2f3dc61ba46241e219385248

Sanders Institute public filing index · September 12, 2026 check

ProPublica Nonprofit Explorer / IRS-derived index · Filing availability index · Checked 2026-09-12

Tax filings by year; latest displayed tax year 2024, object 202523219349323472

Only the index response is covered by this hash. Underlying returns have separate receipts. No tax-year-2025 return was located in this index; this is not evidence of nonfiling or exhaustive IRS availability.

Source receipt SHA-256f7145216746206c0895a93e735037e9f0ef5ba8af66b71471351c2f7958b907e
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