Does It Cost More to Mail a Letter to Canada?

Mailing a letter from the United States to Canada generally costs more than sending one domestically. This difference in pricing reflects the increased logistical complexities and processing requirements associated with international mail. Understanding these distinctions helps ensure proper postage is applied and your correspondence reaches its destination efficiently.

Cost Comparison for Letters to Canada

Sending a standard one-ounce letter within the United States costs $0.78 as of July 13, 2025. In contrast, mailing a one-ounce letter to Canada using First-Class Mail International requires a Global Forever stamp, priced at $1.70. This represents a significant increase compared to domestic rates. The higher cost for international mail stems from additional handling, transportation across borders, and necessary customs processing. International agreements and the infrastructure required to deliver mail across countries also contribute to these elevated prices.

Factors Influencing International Letter Costs

The cost of mailing a letter to Canada can vary depending on several factors. The weight of your mailpiece directly impacts the postage required, with heavier items incurring higher charges. Beyond weight, the dimensions and shape of your letter are also considered; non-standard sizes or rigid envelopes may be classified as “large envelopes” or even packages, leading to increased postage rates. Different service types, such as First-Class Mail International or Priority Mail International, offer varying speeds and features, each with its own pricing structure.

Determining the Exact Postage

To determine the postage needed for a letter to Canada, use the official postal service website’s postage calculator. This online tool requires inputting the origin ZIP code, destination country (Canada), exact weight, and dimensions of your mailpiece. Selecting the desired service type provides the precise postage amount. For unusual items or in-person assistance, visit a local post office for a definitive postage calculation. Accurate weighing and measuring are crucial for an accurate postage assessment.

Mailing Your Letter to Canada

Once determined, postage can be purchased at a post office, self-service kiosks, or online. Affix postage to the upper right-hand corner of the envelope. For international mail, a customs form is generally required if contents are not non-negotiable documents or correspondence. PS Form 2976, a short customs declaration, is used for letters containing merchandise valued at $400 or less, and these forms can be obtained and completed online or at a post office. After preparing your letter with postage and any necessary customs forms, drop it in a collection box or hand it to a clerk at the post office.