New USPS Postage Rates as of May 31st, 2015 May 21, 2015 By Amy Talarico On May 4th, 2015 the Postal Regulatory Commission approved a rate change for the USPS. Notably, the USPS First-Class stamp will remain … [Read more...] about New USPS Postage Rates as of May 31st, 2015