How to Buy Postage Stamps Online

Easily buy and print USPS postage stamps online for letter mailings.

To buy postage stamps online, all you need is a printer, approved postage labels and a subscription to a PC Postage service such as Stamps.com.

Stamps.com, the leader in online postage with over 500,000 customers, offers the ability to buy and print postage stamps using special labels called NetStamps. These adhesive labels can be used to send any class of mail for domestic or international letters. Postage for NetStamps can be printed using a regular inkjet or laser printer.

Try us out for 4 weeks! Get $5 in free postage

(to use during your trial).

Try us out for 4 weeks! Get $5 free postage

(to use during your trial)

Try us out for 4 weeks!

Get $5 free postage

(to use during your trial)

How to Buy Postage Stamps Online with Stamps.com

  1. Determine Value of Postage Stamp
    Choose whether you want to specify the postage value for each stamp, or let Stamps.com calculate the amount of postage you need.

    If specifying the postage value:

    • Select a domestic or international mail class.
    • Enter the desired postage value (up to $200), or click the “Intl” button to calculate rates for International mail.

    If calculating the amount of postage:

    • Select your mailpiece type.
    • Enter the weight of the mailpiece.
    • Select your desired domestic mail class
    • If necessary, enter package dimensions and/or destination ZIP (required for Priority Mail or Priority Mail Express).
    • Optionally, purchase USPS Special Services, by clicking the “Select…” button.
  2. Input NetStamps Serial Number
    Enter the NetStamps sheet Serial Number, such as B12345, in the designated serial number field.
  3. Determine How Many Postage Stamps to be Printed
    Specify the number of NetStamps labels you want to print. You can print any number of stamps you choose or print the entire page of postage stamps.
  4. Verify the Postage Stamps to be Printed
    Using the preview, verify that the labels to be printed are available to print on your NetStamps sheet. To change the starting label, simply click the label you want to start on. A sample print is strongly recommended the first time you print and each time you change your printer, printer settings, or print media.
  5. Print Your Postage Stamps
    Place your NetStamps label sheet(s) into your printer and click the “Print Postage” button.

Try Stamps.com for 4 weeks!

Every new customer account starts with:

  • Free 5 lb. Digital Scale*, connects via USB
  • 4-week trial
  • $5 in free postage to use in trial period
  • Free Supplies Kit including postage labels
  • Additional $10 postage coupons to use after trial
    *pay only S&H fee