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PeerBasis
Compensation Comparability Determination

Dakota Sunset Museum

Executive Director / CEO

EIN 460377948
SD · NTEE A540
FY ending 2023-12-31
June 9, 2026

This analysis benchmarks the total compensation of Mary Carol Potts, Executive Director / CEO ($10,871) against every comparable organization that fit the selection criteria — 25 in total — drawn systematically from IRS Form 990 filings, not a hand-picked subset.

Compensation sits at approximately the 24th percentile of comparable organizationsbelow the typical range for comparable organizations

How comparable organizations were selected

25 organizations qualified on sector, size, and geography 25 within the band form the benchmarked peer set.

Distribution of comparable compensation

$1,482 total compensation of comparable organizations → $43,612 $10,871
$6,02010th
$11,06425th
$16,873Median
$31,29775th
$40,95490th
$10,871This org · 24th
p10$6,020
p25$11,064
p50$16,873
p75$31,297
p90$40,954
$10,871

Comparable organizations

Each figure is Form 990 Part VII columns D + F (reportable pay plus other compensation and benefits; column F may include amounts from related organizations), normalized to SD cost of living (BEA RPP, 2023) and to its filing year (CPI-U); the reported amount is on each linked 990.

OrganizationStateTotal revenueTotal compSource
Pittsburg-camp County Museum Assoc IncTX $77,645$14,874 990
Friends Of Chevra T'helimVA $79,530$11,064 990
Kings Mountain Historical Museum Foundation IncNC $77,367$40,749 990
Pacific Northwest Railroad ArchiveWA $81,621$2,717 990
Overfield Tavern MuseumOH $85,394$41,091 990
Vasa Order Of America NationalIL $86,295$43,612 990
North Myrtle Beach Area HistoricalSC $69,735$42,041 990
Jack Oconnor Hunting Heritage &ID $90,074$1,482 990
Alex Haley Museum AssociationTN $90,663$20,353 990
American Society Of Military History IncCA $94,326$31,297 990
Lea County Museum IncNM $61,724$37,864 990
Mid America Transportation AndIA $96,077$23,127 990
St Albans Historical Society IncVT $97,194$29,475 990
Pembina County Historical SocietyND $97,239$10,659 990
Sweet Grass County Museum SocietyMT $59,469$13,532 990
Person County Museum Of History IncNC $98,322$35,466 990
The Narrow Gauge Preservation FoundationMO $58,293$8,203 990
Signal And Cyber Museum SocietyGA $99,556$8,849 990
Southwest Florida Military Museum & Library IncFL $57,296$11,165 990
Mechanicsburg Museum AssociationPA $99,879$4,564 990
Bayfield Heritage Association IncWI $102,049$11,159 990
The American Classic Arcade MuseumNH $105,991$15,227 990
Huntington African American Museum IncNY $107,966$21,092 990
Veterans Memorial MuseumCA $113,890$23,472 990
Mendota Museum & Historical SocietyIL $116,319$16,873 990

Methodology

Comparable organizations were drawn from electronically filed IRS Form 990 returns and matched on sector (NTEE code), budget (a size-adaptive revenue band that tightens as the organization grows), and geography (same-state first, broadening only when too few peers qualify); every organization within the band forms the peer set. To compare fairly across regions and years, peer compensation is normalized to SD cost of living (BEA Regional Price Parities, 2023) and to the subject's filing year (CPI-U). The figure benchmarked is Form 990 Part VII, Section A, columns D + F — reportable pay plus other compensation, benefits, and deferred amounts (column F may include amounts from related organizations) — with the chief executive matched by role. Related-organization amounts (column E) and institutional trustees are excluded. Full methodology: peerbasis.org/methodology.

Sample, role match & sensitivity

Sensitivity — the subject's percentile under alternative compensation definitions:

BasisSubject percentile
Total compensation (D + F), cost-of-living + inflation adjusted — the PeerBasis default24th
Total compensation (D + F), as reported (no adjustments)20th
Reportable pay only (column D), adjusted24th
All sources (D + E + F), adjusted24th

If the percentile moves materially across these definitions, the result is sensitive to methodology choices, and the board should weigh which basis best fits its facts.

Rebuttable presumption of reasonableness · 26 CFR 53.4958-6

Compensation paid by a tax-exempt organization is presumed reasonable — shifting the burden to the IRS — when three requirements are met. This report supplies the comparability data for the second. The board should record the following in its minutes concurrently with its decision:

Draft board minutes — executive compensation

  1. The compensation of the Executive Director / CEO (Mary Carol Potts) was approved in advance by [the Board / Compensation Committee], composed of members with no conflict of interest with respect to the arrangement.
  2. Prior to its determination, the authorized body obtained and relied upon appropriate comparability data, namely the PeerBasis Compensation Comparability Determination dated June 9, 2026, comparing compensation against 25 similarly situated organizations (Same NTEE sector (A54), nationwide + budget 0.67–1.5× revenue).
  3. The authorized body determined that total compensation of $10,871 is reasonable (approximately the 24th percentile of comparable organizations) and documented the basis for this determination concurrently, on [date], by a vote of [__ for / __ against].

Sources: IRS Form 990 e-file data (apps.irs.gov); IRS Business Master File (NTEE classification). This report is comparability data to support a board's good-faith determination under IRC 4958; it is not legal or tax advice. Generated by PeerBasis on June 9, 2026.