Bulk mail postage rates 2013

Here are the bulk mail postage rates for 2013 in the United States:

First-Class Mail

• Letters (1 oz or less):
  • Non-profit: $0.335 per piece
  • Commercial: $0.335 per piece
• Letters (over 1 oz):
  • Non-profit: $0.335 per piece + $0.21 per ounce
  • Commercial: $0.335 per piece + $0.21 per ounce
• Flats (up to 13 oz):
  • Non-profit: $0.335 per piece + $0.21 per ounce
  • Commercial: $0.335 per piece + $0.21 per ounce

Standard Mail

• Letters (1 oz or less):
  • Non-profit: $0.286 per piece
  • Commercial: $0.286 per piece
• Letters (over 1 oz):
  • Non-profit: $0.286 per piece + $0.21 per ounce
  • Commercial: $0.286 per piece + $0.21 per ounce
• Flats (up to 13 oz):
  • Non-profit: $0.286 per piece + $0.21 per ounce
  • Commercial: $0.286 per piece + $0.21 per ounce

Periodicals

• Letters (1 oz or less):
  • Non-profit: $0.245 per piece
  • Commercial: $0.245 per piece
• Letters (over 1 oz):
  • Non-profit: $0.245 per piece + $0.21 per ounce
  • Commercial: $0.245 per piece + $0.21 per ounce
• Flats (up to 13 oz):
  • Non-profit: $0.245 per piece + $0.21 per ounce
  • Commercial: $0.245 per piece + $0.21 per ounce

Special Services

• Certified Mail:
  • $3.45 per piece (first ounce), $0.21 per additional ounce
• Return Receipt:
  • $2.75 per piece (first ounce), $0.21 per additional ounce
• Signature Confirmation:
  • $3.45 per piece (first ounce), $0.21 per additional ounce

Note: These rates are effective as of January 27, 2013, and are subject to change. It's always a good idea to check with the USPS or a reliable source for the most up-to-date rates.