bpost rate card 2026: formats, prior, non-prior, registered

Three axes that drive the price of a bpost item

The price of a letter in Belgium is not a fixed number: it depends on three combined axes.

The physical format of the item: standard (≤ folded A4, thin) or non-standard (thick, open A4, cardboard).
The speed: prior (target D+1) or non-prior (2 to 3 working days).
The options: registered, return receipt, basic tracking, international.

As long as you stay in standard prior letter with no options, you are on the most familiar unit rate — the post office stamp price. Outside that box, the price climbs in tiers. You can check Bjet24's current sending rates to compare with buying stamps individually.

Standard vs non-standard format

An item is standard if it meets:

reasonable dimensions (typically DL/C5 envelope),
limited thickness (≤ 5 mm in practice),
weight ≤ 50 g for the first tier, up to 100 g with a surcharge.

Beyond that, it becomes non-standard or "oversized", priced noticeably higher per gram. Many SMEs are caught off guard by a 25-page client file slipped into an A4 envelope — it shifts to non-standard without anyone noticing.

A useful reflex: build a mailing template that respects the address zone, prints only the useful pages and uses a DL window envelope. Across 200 items, the format gap can mean 40 to 60 € saved. Businesses with recurring high volumes can further reduce costs through a bulk mailing solution for Belgian SMEs.

Prior, non-prior, and the false economy

The prior rate targets next-working-day delivery. Non-prior targets 2 to 3 working days. The price gap is around 20 to 30 % in favour of non-prior.

When to choose non-prior?

Non-urgent mailings: yearly charge statements, non-real-time HR communications, marketing material.
Recurring batches where the sender accepts an extra day to cut the bill.

When to stay on prior?

Anything with a legal dimension: invoices, reminders, formal notices, registered mail.
Anything that must arrive before a date (AGM invitation, contract deadline).

The classic mistake is to mark everything prior just to be safe: across 500 monthly items, the bill grows with no real value-added for half of them.

Registered, a product of its own

Registered mail is not a stamp surcharge — it is a separate product with its own pricing and proofs. Expect:

5 to 6 € for a national standard registered without return receipt,
7 to 9 € for a national registered with return receipt,
More for international, with extended delivery times.

Registered is always prior by design and benefits from a dedicated handling chain (signature, post-office holding, proof archival). Our complete guide to registered mail in Belgium covers all use cases in detail.

For situations where physical delivery is not legally required, the electronic registered mail versus paper registered comparison is worth reading before choosing a format.

The stamp trap vs the business account

For a one-off item, buying a stamp at the post office is fine. For a recurring activity, a business account changes the math:

access to negotiated rates on volume,
monthly invoicing (instead of per-item payment),
possible integration with a mailing platform like Bjet24 that consolidates everything: preparation, dropoff, proofs.

For an SME sending 100 items a month, the total cost gap between "counter stamps" and "automated business account" is typically 15 to 25 %.

Three concrete cases

Law firm sending 30 registered items a week: switching to a business account with end-to-end digital registered saves more than a day a week of logistics.
Private landlord with 40 units: non-prior by default for information letters, prior + registered only on late payments and notices.
Non-profit sending 200 yearly invitations: standard prior, A5 folded in a DL envelope to stay in the standard tier.

Summary

The bpost rate card rewards format consistency and prior moderation. A well-designed mailing in a DL envelope, on non-prior when possible and via a business account, can cut the annual mail bill by 20 to 30 % without changing a word of the content.

Frequently asked questions

What is the bpost prior letter rate in 2026?

In 2026, the bpost prior standard letter rate corresponds to the price of a red stamp sold at post offices or online. The exact amount may change with annual tariff adjustments, so check the bpost website or a sending platform for the latest figures. The prior rate includes a target next-working-day delivery.

What is the difference between prior and non-prior at bpost?

Prior mail targets delivery on the next working day after submission; non-prior targets 2 to 3 working days. Non-prior is typically 20 to 30 % cheaper. For non-urgent mailings such as annual statements or marketing communications, choosing non-prior is a straightforward way to reduce postage costs.

When does a letter become non-standard at bpost?

A letter is classified as non-standard when it exceeds bpost thresholds for dimensions, thickness or weight. In practice, an unfolded A4 envelope or a piece thicker than 5 mm falls outside the standard format and is charged at a higher rate. Many businesses only discover this when reviewing their postage bill.

How much does registered mail cost with bpost in 2026?

A national standard registered letter without return receipt typically costs 5 to 6 €; with return receipt, the price rises to 7 to 9 €. Registered mail is a separate product from ordinary postage: it includes a signature on delivery, proof of sending and archived evidence. Bjet24 lets you send registered letters without going to a post office, with digital proof included.

Is paper registered mail always required, or is there a digital alternative?

Belgian law recognises electronic registered mail (eRegistered) as equivalent to paper for many legal communications. This digital option is often cheaper and faster to send. However, certain legal acts still require a physical registered letter. Always verify the legal requirements of your specific situation before choosing a format.