The October 1, 2026 revision is now in effect. As of October 13, 2026, Click Post requires a nationwide flat rate of 240 yen (tax included), a weight within 2 kg, total dimensions (sum of 3 sides) within 60 cm, and longest side within 34 cm, provided the parcel can actually be dropped into a postal collection box. Counter drop-off is restricted to parcels that meet one of three exceptions and measure 3 cm or less in thickness.
The pre-revision terms of 185 yen, 1 kg, and individual dimension limits were in effect through September 30, 2026. This article first outlines the current conditions, and then organizes the previous terms and the cutover announcements as a historical record. For the workflow from applying on Shopify to registering tracking numbers, refer to the Shopify x Click Post Shipping Guide.
Current Rates, Sizes, and Drop-Off Conditions
Click Post currently applies to parcels with a postage rate of 240 yen, a weight up to 2 kg, total dimensions within 60 cm, a longest side within 34 cm, and that can actually be dropped into a postal collection box. Rates and main dimensions can be verified on the Japan Post Click Post Service Guide.
| Item | As of October 13, 2026 |
|---|---|
| Postage Rate | 240 yen (tax included, nationwide flat rate) |
| Size | Total dimensions within 60 cm, longest side within 34 cm, must fit into a post box |
| Minimum Dimensions | Length 14 cm x width 9 cm or more. Cylindrical items: length 14 cm or more, diameter 3 cm or more |
| Weight | Within 2 kg |
| Drop-Off Method | Post box drop-off in principle. Counter drop-off is restricted to cases meeting 3 exceptions and thickness of 3 cm or less |
The approximate thickness that fits into a post box is 3 cm, but slot sizes vary depending on the post box. Even for packages exceeding 3 cm in thickness, it is necessary to verify whether they physically fit into the specific slot you use. On the other hand, the exception conditions for counter drop-off strictly require a thickness of 3 cm or less. Since specific usage conditions also apply to post boxes with large collection slots, check official notices before sending.
Reviewing the October 1 Revision as a Historical Record
Comparing the conditions before the revision with current conditions shows which standards changed.
| Item | Previous Conditions Through September 30, 2026 | Current Conditions Starting October 1, 2026 |
|---|---|---|
| Postage Rate | 185 yen (tax included, nationwide flat rate) | 240 yen (tax included, nationwide flat rate) |
| Size | Longest side within 34 cm, shortest side within 25 cm, thickness within 3 cm | Total dimensions within 60 cm, longest side within 34 cm, and droppable into a post box |
| Weight | Within 1 kg | Within 2 kg |
| Drop-Off Method | Post box drop-off or counter | Post box drop-off in principle. Counter drop-off is subject to exception conditions and limited to 3 cm or less in thickness |
The details of the revision were announced across multiple releases. The July 3 fare revision announcement outlined the policies for the new rates, dimensions, and weight, and the August 21 notice on drop-off methods specified the exceptions where counters could be used. For current service conditions, check the updated official guide.
Prior to the cutover, the official Click Post website announced that the payment deadline for the old rate to apply was September 30 at 23:30 (scheduled), and that system maintenance was scheduled from 23:30 on that date until October 1 at 6:00 (scheduled). This is a record of the schedule announced at the time of the cutover. Because this article has not verified the actual outage and resumption times, the announced schedule and verified outcomes are distinguished here.
Measuring Dimensions and Weight After Packaging
Size is judged not by the dimensions of the item itself or the inner box dimensions, but by the outer dimensions of the finished, packed parcel. Measure the longest side, width, and thickness to calculate the total, and separately verify the total weight and whether it can actually be dropped into the post box you use.
A parcel measuring 34 x 25 x 3 cm, which reached the maximum limits under the previous conditions, totals 62 cm across its three sides. Because this exceeds the current total limit of 60 cm, boxes that could be sent under the old conditions now require a review of their dimensions. This is a calculation example based on published dimensions, not the result of Japan Post inspecting individual packages.
Below is a comparison based on hypothetical dimensions and weights. "Within limits" refers strictly to an evaluation against the numerical conditions shown in the table, and does not guarantee acceptance regarding contents or actual post box droppability.
| Hypothetical Packed Outer Dimensions & Total Weight | Total of 3 Sides | Comparison with Previous Conditions | Comparison with Current Conditions |
|---|---|---|---|
| 31 x 22 x 3 cm, 1.0 kg | 56 cm | Dimensions and weight within limits | Numerical conditions within limits. Verify separately whether it fits the slot |
| 34 x 25 x 3 cm, 1.0 kg | 62 cm | Previous dimensions and weight within limits | Total of 3 sides exceeds upper limit |
| 30 x 23 x 4 cm, 1.5 kg | 57 cm | Thickness and weight exceed previous upper limits | Numerical conditions within limits. Verify actual post box fit; ineligible for counter exception |
| 34 x 24 x 3 cm, 1.0 kg | 61 cm | Previous dimensions and weight within limits | Total of 3 sides exceeds upper limit |
| 30 x 20 x 3 cm, 2.001 kg | 53 cm | Exceeds previous weight limit | Weight exceeds upper limit |
Current conditions also include rules on minimum dimensions and prohibited contents. After measuring the numbers, check the Japan Post Guide for conditions regarding contents and packaging. Where to measure after packaging is explained in detail in Click Post Thickness Limits and Verifying New Sizes.
Categorizing Reasons When a Parcel Does Not Fit in a Post Box
Even if a parcel meets the numerical conditions, it must actually be droppable into a postal collection box. Post box slots differ in size depending on the unit, so if a package does not fit into your usual post box, first check whether another slot can be used.
Japan Post provides guidance that the approximate thickness that can be dropped into an ordinary post office collection box is 3 cm. Furthermore, even for post boxes with large collection slots capable of accepting mail items up to 7 cm thick, Click Post cannot be dropped into the slot on the right side when facing the box. Check installation locations and collection slots using official resources such as the Post Office, ATM, and Post Box Search.
Post office counters can be used only for parcels that meet one of the following conditions and measure 3 cm or less in thickness:
- The post box cannot be used because it is full, out of order, or otherwise unavailable
- The quantity to be dropped off is expected to exceed the volume that can be deposited into the post box at once
- Total dimensions are within 60 cm and the longest side is within 34 cm, but the width of the collection slot is insufficient
These conditions are stated in Japan Post's notice on drop-off methods. Because specific criteria for quantities are not indicated in that notice, consult your local post office beforehand if it is difficult to determine whether your situation qualifies. Packages exceeding 3 cm in thickness cannot be brought to the counter even if they qualify for an exception. For decisions based on why a parcel cannot be dropped off, refer to When Click Post Can Be Dropped at the Counter vs. Post Box Decisions.
Reviewing Store Shipping Workflows and Shipping Fee Settings
In line with current shipping operations, review your packaging materials, drop-off locations, and shipping fee displays in sequence.
- Packaging Materials: Record outer dimensions and total weight after packaging for each box and envelope, and verify them against the requirements for total dimensions, longest side, and minimum dimensions. Also check whether packages actually fit into the post box you use.
- Drop-Off Location: Drop off packages into a post box under normal circumstances. If using a counter, confirm that the parcel satisfies both one of the three exception conditions and the thickness limit of 3 cm or less.
- Shipping Fee Display: Postage increased by 55 yen per parcel, from the previous 185 yen to 240 yen. Assuming a store ships 100 parcels a month, a simple comparison of postage alone results in a difference of 5,500 yen per month (100 parcels x 55 yen). Decide whether to adjust customer-facing shipping charges or free-shipping thresholds according to your store's gross margins and pricing strategy. For calculation concepts, Preparing to Review Shipping Cost Burden is a helpful reference.
- Shopify Shipping Settings: If you change shipping rates or free-shipping conditions, verify your shipping profiles and cart screen displays. For step-by-step instructions, see the Shopify Shipping Settings Guide.
The September 30 payment cutoff and the system outage during the cutover are already past events. If you need to look back at shipping operations on those specific dates, you can refer to the Shipping Preparation Checklist Around the Cutover Date, but use the updated official service guide for current terms of use.
Choosing Detailed Guides Based on Your Store's Challenges
Based on the overall Click Post revision, select the next tasks to verify for your store.
| Store Situation | What to Check | Detailed Guide |
|---|---|---|
| Unsure whether current boxes meet conditions | Outer dimensions after packing, total weight, minimum dimensions, post box fit | Checking Size Limits and Packaging |
| Have parcels that do not fit in a post box or need counter drop-off | Collection slots, 3 counter exceptions, 3 cm or less thickness condition | When Parcels Can Be Brought to the Counter vs. Post Box Decisions |
| Want to check shipping cost burden after rate revision | Calculate postage difference from shipment volume and determine store absorption | Preparing to Review Shipping Cost Burden |
| Changed Shopify shipping fee display | Shipping profiles and display in cart | Shopify Shipping Settings Guide |
| Want to review operations from late September to early October 2026 | Announcements regarding payment deadlines and system downtime at that time | Cutover Day Shipping Preparation Checklist |
Frequently Asked Questions
What are the current Click Post rates, size, and weight limits?
The postage rate is a flat 240 yen nationwide (tax included), and the weight limit is up to 2 kg. After packaging, the parcel must have total dimensions (sum of 3 sides) within 60 cm, a longest side within 34 cm, and must physically fit into a postal collection box. Minimum dimensions are at least 14 cm in length and 9 cm in width; for cylindrical items, at least 14 cm in length and 3 cm in diameter.
What changed on October 1, 2026?
Before the revision, the postage rate was 185 yen (tax included), the weight limit was up to 1 kg, and size limits were within 34 cm on the longest side, 25 cm on the shortest side, and 3 cm in thickness. Starting October 1, 2026, the postage rate became 240 yen, the weight limit became up to 2 kg, and the size limits became total dimensions within 60 cm, longest side within 34 cm, and sized to fit into a post box, with drop-offs shifting to post boxes in principle. Counter drop-off can only be used when an exception condition is met and the parcel thickness is 3 cm or less.
Is a Shopify app required to use Click Post?
No, it is not required. Click Post applications, postage payments, and label printing can all be handled on the official website. If you use a shipping app, evaluate whether it reduces the workload of generating application data from Shopify order information and registering issued tracking numbers back to orders, based on its current features and your store's operations.
Can Click Post be dropped off at a post office counter?
Counter drop-off is an exception. It is permitted only when one of three conditions is met—the post box cannot be used because it is full or out of order, the volume to be shipped is expected to exceed what can be deposited at once, or the post box slot width is insufficient despite the parcel meeting specified dimensions—and the parcel thickness is 3 cm or less.
What was the payment deadline for the old 185 yen rate to apply?
Notices on the official Click Post website prior to the cutover announced that transactions with payment procedures completed by September 30, 2026 at 23:30 (scheduled) would receive the old rate of 185 yen. At the same time, system maintenance from September 30 at 23:30 to October 1 at 6:00 (scheduled) was announced. Both were past announcements made at the time of the cutover and do not reflect current rates or service availability.
Summary
Following the October 1, 2026 revision, Click Post costs 240 yen and has a weight limit of 2 kg. In addition to keeping packed dimensions within 60 cm in total and 34 cm on the longest side, verify the minimum dimensions and whether parcels can actually be dropped into a postal collection box. Counter drop-off is restricted to cases that meet an exception condition and measure 3 cm or less in thickness.
Date current conditions were confirmed: October 13, 2026. The primary sources are the Japan Post Click Post Service Guide and Exception Conditions for Post Office Counter Drop-Off.
A Shopify app is not required for Click Post applications themselves. If generating application data from orders or registering tracking numbers is a challenge for your store, you can check the supported scope with tools to streamline Click Post shipping.
Related Reading
- Shopify x Click Post Shipping Guide — If you want to check the workflow from application to tracking number registration
- Click Post Thickness Limits and Verifying New Sizes — If you want to verify post-packaging conditions and post box fit
- When Click Post Can Be Dropped at the Counter vs. Post Box Decisions — If you want to check counter exceptions and how to choose a post box
- Preparing to Review Shipping Cost Burden — If you want to plan store cost absorption based on fare differences
- Cutover Day Shipping Preparation Checklist — If you want to review operational records from late September to early October 2026
