Document And Entity Information - USD ($) $ in Millions	12 Months Ended
Document And Entity Information - USD ($) $ in Millions	Dec. 31, 2025	Mar. 09, 2026	Jun. 30, 2025
Document Information Line Items
Entity Central Index Key	0001801602
Document Type	10-K/A
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2025
Document Fiscal Year Focus	2025
Document Transition Report	false
Entity File Number	001-40049
Entity Registrant Name	SPRINGBIG HOLDINGS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	88-2789488
Entity Address, Address Line One	621 NW 53rd Street
Entity Address, Address Line Two	Ste. 340
Entity Address, City or Town	Boca Raton
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33487
City Area Code	(800)
Local Phone Number	772-9172
No Trading Symbol Flag	true
Title of 12(b) Security	None
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 1.4
Entity Common Stock, Shares Outstanding		48,584,437
Documents Incorporated by Reference [Text Block]	None
Amendment Description	SpringBig Holdings, Inc. (the “Company,” “we,” “us,” “our,” or “SpringBig”) previously filed its Annual Report on Form 10-K for the year ended December 31, 2025 (the “Original Form 10-K”) with the Securities and Exchange Commission (the “SEC”) on March 27, 2026. In accordance with General Instruction G(3) of Form 10-K, this Amendment No. 1 to the Original Form 10-K (this “Amendment”) is being filed solely for the purpose of filing the information required to be filed in Part III of Form 10-K, including the deletion of the reference on the cover of the Original Filing to the incorporation by reference of certain information from our proxy statement into Part III of the Original Filing.Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), this Amendment also contains new certifications by the principal executive officer and the principal financial officer of the Company as required by Section 302 of the Sarbanes-Oxley Act of 2002. Accordingly, Item 15(a)(3) of Part IV of this Annual Report on Form 10-K is amended to include the currently dated certifications as exhibits. As no financial statements have been included in this Amendment and it does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications have been omitted. The Company is not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 as no financial statements are being filed with this Amendment.Except as expressly noted in this Amendment, this Amendment does not reflect events occurring after the filing of the Original Form 10-K or modify or update in any way any of the other disclosures contained in the Original Form 10-K including, without limitation, the financial statements. Accordingly, this Amendment should be read in conjunction with the Original Form 10-K and the Company’s other filings with the SEC. Capitalized terms used, but not defined herein, shall have the meanings ascribed to them in the Original Form 10-K.
Amendment Flag	true
Document Fiscal Period Focus	FY

SpringBig Holdings, Inc. 10-K/A