EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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We consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-264269) and Forms S-8 (No. 333-265729, No. 333-225135 and No. 333-192990) of FS Bancorp, Inc. (the "Company"), of our report dated March 13, 2026, relating to the consolidated financial statements of the Company and the effectiveness of internal control over financial reporting of the Company appearing in this Annual Report on Form 10-K of the Company for the year ended December 31, 2025.

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/s/ Baker Tilly US, LLP

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Everett, Washington

March 13, 2026