PostageGrid Data Center combines USPS primary-source data, practical calculations and business-mail comparisons. Use the current-rate resources below for planning, then verify the finished mailpiece and current postal requirements with USPS.
2026 postage data and calculations
2026 Business Mailing Cost Calculator — stamped vs. metered 1-ounce letter benchmarks at common business volumes.
Stamps vs. Postage Meter vs. USPS Marketing Mail — rates, volume thresholds, preparation requirements and operating trade-offs.
- Forever Stamp Price History: 2007–2026
Track the 1-ounce letter rate from the first 41¢ Forever Stamp to the current 82¢ rate, with effective dates and rate-change data.
- Cost to Mail 100, 500 or 1,000 Letters in 2026
Calculate postage value at the current USPS 82¢ First-Class Mail 1-ounce letter rate.
- 2026 Forever Stamp Rate Analysis
See how the 78¢ to 82¢ change affects 100, 500, 1,000 and 5,000-piece mailing budgets.
Choose stamps and prepare mail
- Stamp coils, booklets and sheets
Compare packaging and dispensing methods for your mailing workflow.
- Business letter postage checklist
Check the finished letter before choosing and applying postage.
- Postage for large business envelopes
Check dimensions, weight and flexibility before selecting postage.
- Stamps or a postage meter?
Compare staff time, mailpiece mix and operating costs.
- Return envelopes and reply mail
Compare who pays, expected replies and USPS setup requirements.
Plan quantities and purchasing
Manage and verify business mail
Latest research and mailing guides
Data methodology and citation
See the PostageGrid Data Methodology & Citation Policy for source hierarchy, calculation definitions, update rules, limitations and citation guidance.
Primary-source policy
Rate and eligibility claims in PostageGrid data resources are checked against U.S. Postal Service sources. Each data article identifies its primary sources and update date. PostageGrid is an independent retailer, not the U.S. Postal Service.
Shop or get help
Browse postage stamps, explore business postage planning tools, or contact PostageGrid.
PostageGrid Mailing Cost Index
View the 2025–2026 Mailing Cost Index to compare standardized 100, 500, 1,000 and 5,000-letter postage benchmarks using USPS primary-source rate data.