TidyFactPractical calculators, checked factsFact-check log
The fact-check record for our 4 tools: the official sources each tool was checked against, the check date and the checker. An AI does the check. No person reviewed these pages.
Last updated:
After we make a tool, an AI that did not help make it checks the tool against the official sources. The method is on Sources and how we check. The data below is the same as the “Sources” list on each tool page. To report a mistake, see corrections and contact.
Bank holidays 2026–2027 and bank business day calculator
- Checked on
- Checked by
- A separate, independent AI agent (Claude, by Anthropic)No person reviewed it.
- Official sources checked
- K.8 – Holidays Observed by the Federal Reserve System 2026-2030 (last update July 8, 2026)
- Holiday Schedules: 2026 – 2030 holiday schedule and 2026 FedACH holiday schedule
- Federal Holidays: 2026, 2027 and 2028 holiday schedules (5 U.S.C. 6103)
- Holidays and events: 2026 holidays
- Holidays & Trading Hours (2026, 2027 and 2028)
- Holiday Schedule: U.S. holiday recommendations 2026 and 2027
- U.S. Equity and Options Markets Holiday Schedule 2026
- What is ACH?: Quick Facts About the Automated Clearing House (ACH) Network
USPS postage calculator: stamps, Certified Mail and price changes
- Checked on
- Checked by
- A separate, independent AI agent (Claude, by Anthropic)No person reviewed it.
- Official sources checked
- Notice 123 – Price List (Effective October 04, 2026)
- Price and SKU File Archive (price files from January 22, 2023 to July 12, 2026)
- DMM 604 Postage Payment Methods and Refunds (1.10 Additional Standards for Forever Stamps)
- DMM 100 Retail Mail Letters, Cards, Flats, and Parcels: 101 Physical Standards (1.2 Nonmachinable Criteria)
- DMM 503 Extra Services (Certified Mail, Return Receipt)
- Time-Limited 2026 Price Change: Starting October 4, 2026 through January 17, 2027
- U.S. Postal Service Announces Temporary Price Change for 2026 Holiday Shipping Season (Aug. 25, 2026)
- U.S. Postal Service Announces Transportation-Related, Time-Limited Price Change (March 25, 2026)
- U.S. Postal Service Recommends New Prices for July (April 9, 2026)
- Mailing & Shipping Prices: Cost of First-Class Stamps
- 2026 Holiday Shipping Deadlines: Cutoff Dates for December 25
- Rates for Domestic Letters Since 1863
- Postal Service Recommends 2026 Holiday Mailing and Shipping Dates (Sept. 22, 2026)
IRS mileage calculator 2026 (two rates: before and after July 1)
- Checked on
- Checked by
- A separate, independent AI agent (Claude, by Anthropic)No person reviewed it.
- Official sources checked
- Standard mileage rates (mileage rates for all years; page last reviewed or updated July 28, 2026)
- Internal Revenue Bulletin 2026-29: Announcement 2026-11, Optional Standard Mileage Rates
- Notice 2026-10: 2026 Standard Mileage Rates
- IR-2025-128: IRS sets 2026 business standard mileage rate at 72.5 cents per mile, up 2.5 cents
- IR-2024-312: IRS increases the standard mileage rate for business use in 2025
- Topic no. 510, Business use of car (page last reviewed or updated October 9, 2026)
- Privately owned vehicle (POV) mileage reimbursement rates
Minimum wage by state 2027
- Checked on
- Checked by
- A separate, independent AI agent (Claude, by Anthropic)No person reviewed it.
- Official sources checked
- State Minimum Wage Laws (updated July 1, 2026)
- Minimum Wages for Tipped Employees (updated July 1, 2026)
- California's minimum wage set to increase to $17.40 per hour on January 1, 2027 (News Release 2026-66, August 13, 2026)
- Minimum Wage Frequently Asked Questions
- Minimum wage (2026 and 2027 rates)
- Colorado Minimum Wage will Increase to $15.71/hour in 2027
- Governor Lamont Announces Connecticut's Minimum Wage Will Increase to $17.48 on January 1, 2027 (August 5, 2026)
- Maine's Minimum Wage to Increase to $15.70 Per Hour in 2027 (September 18, 2026)
- Minimum Wage & Overtime
- Minimum wage in Minnesota
- Montana's Minimum Wage
- Opinion No. 26-003: Lawfulness of Local Minimum Wage Proposal (May 7, 2026)
- New Jersey minimum wage increase for 2027 (September 29, 2026)
- Minimum Wage
- State of Ohio 2027 Minimum Wage (poster)
- Employment Laws: Minimum Wage
- Payment of Wage: Virginia minimum wage
- Alaska Minimum Wage will increase July 1, 2025 (News Release No. 25-11, June 11, 2025)
- Wage and Hour
- Florida Minimum Wage
- Public Notice: District of Columbia Minimum Wage Increase (July 1, 2026)
- Minimum wage increase schedule
- Minimum Wage
- What is the current minimum wage in Delaware?
- Minimum Wage Law
- Maryland Wage and Hour Law fact sheet
- Massachusetts law about minimum wage
- The Vermont Department of Labor Announces Minimum Wage Increase Starting January 2026