French postal rates have been following a steady upward trajectory for several years. In 2026, the green stamp for 20 g is priced at €1.52, the Plus Services Letter at €3.47, and the red e-letter at €1.60. These prices, regulated by Arcep as part of the universal postal service, are not fixed: a new average increase of 6.73% has already been announced for January 1, 2027.
Understanding the real cost of sending mail in 2026 therefore requires looking beyond the face value of the stamp.
Arcep Regulation: Why Postal Rates Increase Every Year
Most pricing tables simply list prices without explaining the mechanism that produces them. The increases by La Poste are not decided freely: they are capped by a multi-year agreement with Arcep for the universal postal service. This regulatory framework covers the period 2026-2029 and sets a framework within which La Poste can adjust its rates.
The justification provided is based on one observation: the continuous decline in mail volume reduces revenues, while the obligation of universal service (collection and delivery six days a week across the entire territory) maintains high fixed costs. Arcep mediates between the financial sustainability of La Poste and the protection of users.
Specifically, to evaluate the cost of mailing over a full year, this regulatory dynamic must be taken into account. A postal budget calculated in January can become obsolete as soon as the next rates are announced, usually published in the second half of the year.
2026 Pricing Table: Prices by Product and Weight Range
The table below summarizes the rates in effect for La Poste’s main mail products in 2026.
| Product | Max Weight 20 g | Indicative Delay |
|---|---|---|
| Green Letter | €1.52 | J+3 |
| Plus Services Letter (turquoise) | €3.47 | J+2 |
| Red e-letter (online) | €1.60 | J+1 |
| Registered Letter 20 g | €6.11 | Variable |
| International Letter 20 g | €2.25 | Variable |
Weight remains the primary factor for variation. Beyond 20 g, each additional weight category increases the rate, sometimes significantly for thick document shipments. The format (standard, square, roll) also plays a role: a non-standard envelope incurs an additional cost.
Green Letter or Red e-letter: A Price Gap to Consider
The green letter at €1.52 is the most economical option for a physical shipment. The red e-letter, at €1.60, offers a J+1 delivery time but goes through a dematerialized process printed and delivered by La Poste. The 8-cent difference buys two days of speed, which may justify the choice for time-sensitive management mail.
The Plus Services Letter, at €3.47, caters to more specific needs (tracking, J+2). Its price positions it significantly higher, and its use remains marginal for regular shipments.
Postal Rate Increase 2027: What Changes Starting in January
La Poste announced on July 27, 2026, an average increase of 6.73% in mail and package rates effective January 1, 2027. This increase, the third consecutive one in three years, affects all products of the universal service.
The new prices announced for 2027 illustrate the extent of the change:
- Green Letter 20 g: increase from €1.52 to €1.67, approximately a 9.9% increase
- Registered Letter 20 g: increase from €6.11 to €6.47, nearly 6%
- International Letter 20 g: increase from €2.25 to €2.45, approximately an 8.9% increase
- Plus Services Letter 20 g: increase from €3.47 to €3.67
- Red e-letter: increase from €1.60 to €1.70
For a business that ships several hundred pieces of mail each month, these accumulated cents represent a constantly rising budget item. The 2026 rates are already transitional: any projection of postal costs must incorporate the 2027 pricing structure.
Registered and International: The Most Affected Segments
The registered letter, already at €6.11 in 2026, will rise to €6.47. For professions that send formal notices, cancellations, or legal documents, this rate is significant. International rates follow the same trend, with a purple stamp increasing from €2.25 to €2.45.
Reducing Your Postal Bill in 2026: Concrete Levers for Professionals
In the face of this price inflation, several levers allow for containing costs without giving up physical mail.
The first concerns the choice of the product suited to the actual need. Sending an invoice via Plus Services Letter when a green letter suffices means paying more than double for a delivery time that is often unnecessary. This over-postage reflex is common in organizations that have not reviewed their procedures in several years.
The second lever involves optimizing weight. Reducing paper weight, limiting unnecessary attachments, or consolidating multiple documents into a single shipment can shift an envelope into a lower pricing tier.
For large volumes, business rates accessible via a franking machine offer discounts of up to several dozen percent compared to the public rate. Bulk mailing (Destineo, for example) applies decreasing scales for management mail.
Dematerialization remains the most radical lever. For every piece of mail that can be replaced by an electronic transmission with legal value, the cost drops to a few cents. However, some legal obligations still require paper format, particularly for registered letters with legal value.
The 2026-2027 pricing framework confirms a structural trend: physical mail will cost a little more each year. For individuals, the impact remains modest per unit. For professionals managing regular flows, the annual review of mailing practices is no longer optional; it directly conditions the control of the postal budget.