The primary sources behind this report. We link to the page where each figure appears.
| 01 | Bankrate Side Hustle Survey 2025 | YouGov online panel, n=2,616 U.S. adults (699 with side hustle), fielded 2025-06-02 to 06-04 | View source → |
| 02 | LendingTree Side Hustle Survey 2026 | QuestionPro online survey, n=2,049, fielded 2026-03-03 to 03-06 | View source → |
| 03 | LendingTree Side Hustle Survey 2025 | QuestionPro online survey, n=1,999, fielded 2025-02-04 to 02-05 | View source → |
| 04 | Zapier side hustle report 2022 | Zapier-commissioned survey | View source → |
| 05 | Zapier side hustle report (Harris Poll) | Harris Poll online survey, n=2,001 U.S. adults (696 with side hustle), fielded 2020-12-21 to 12-23 | View source → |
| 06 | SSRS Economic Attitudes Survey Wave 4 topline (ECON9) | SSRS Opinion Panel Omnibus (probability-based ABS+RDD panel), n=1,033, fielded 2025-10-16 to 10-19, MoE ±3.5pp | View source → |
| 07 | SSRS Economic Attitudes Survey Wave 4 topline | SSRS Opinion Panel Omnibus (probability-based), n=1,030, fielded 2025-08-01 to 08-04, MoE ±3.5pp | View source → |
| 08 | The Future Workforce Index 2025 | n=3,000 skilled U.S. knowledge workers, fielded 2024-12 to 2025-02, MoE ±1.8pp; ~20M extrapolated via BLS occupation data | View source → |
| 09 | CES Working Paper 25-60: Business Owners and the Self-Employed | Linked IRS 1040 Schedule C / Schedule SE tax records | View source → |
| 10 | The Penny Hoarder 2026 side hustle survey | Pollfish mobile survey, n=1,000 U.S. adults screened to currently earn side income, fielded 2026-02, post-stratified | View source → |
| 11 | Robert Walters side hustle poll | Robert Walters poll of UK professionals (sample size not stated in release) | View source → |
| 12 | Self Financial U.S. side hustle statistics survey | Online survey, n=1,001 U.S. adults, fielded 2026-06 | View source → |
| 13 | Bankrate Side Hustle Survey 2024 | Bankrate 2024 survey as reported by USA Today Network (Beacon Journal) | View source → |
| 14 | Self Financial side hustle statistics survey | Online survey, n=1,001, fielded 2026-06; 2025 wave n=1,439 (avg $442.76) | View source → |
| 15 | Census Nonemployer Statistics gig economy analysis | Nonemployer Statistics built from IRS business income tax records, 2023 reference year | View source → |
| 16 | Patriot Software Side Hustle Nation survey | Survey of 1,000 U.S. adults who currently have or had a side hustle | View source → |
| 17 | Etsy 2024 Form 10-K | Company operating metrics, FY2024 (SEC filing) | View source → |
| 18 | eBay 2024 Form 10-K; eBay 2024 Impact Report | Company FY2024 disclosures | View source → |
| 19 | Self Financial side hustle statistics survey 2025 | Online survey, n=1,439 | View source → |
| 20 | LendingTree Side Hustle Surveys 2025-2026 | QuestionPro, n=2,049 (2026 wave) | View source → |
| 21 | LendingTree Work-From-Home survey | QuestionPro, n=2,000 U.S. consumers (450+ remote workers), fielded 2025-05-01 to 05-06 | View source → |