For ordinary Yu-Pack, the ¥120 carry-in discount can combine with either the ¥60 repeat-address discount or the ¥60 multiple-parcel discount. The two ¥60 discounts do not combine with each other. Meeting all three conditions therefore does not produce a ¥240 discount per parcel. Japan Post: discount combinations
This guide concerns domestic, sender-paid Yu-Pack using the conventional discounts. It is desk research, not a tested shipment or a comparison of every app, business contract or promotional rate.
Identify which condition each discount rewards
The carry-in discount applies when you bring the parcel to a post office or Yu-Pack handling location. Japan Post’s convenience-store FAQ also confirms that participating stores can handle the conventional discounts; carrying in one parcel gives a ¥120 reduction. Japan Post: convenience-store discounts
The address-related conditions are separate:
| Discount | What you need to establish |
|---|---|
| Repeat address, 同一あて先割引 | The sender's copy from a Yu-Pack or Weight Yu-Pack dispatched within one year, for the same destination |
| Multiple parcels, 複数口割引 | At least two parcels of the same eligible type to the same destination, dispatched together |
The address discounts are ¥60 per eligible parcel and exclude recipient-paid postage (着払). Ordinary Yu-Pack and Weight Yu-Pack cannot be mixed to meet the multiple-parcel condition. Japan Post: conditions and exclusions
“Two parcels on the same shopping trip” is not sufficient. Japan Post explicitly says that different destinations do not qualify for the multiple-parcel discount. Japan Post: different destinations
Work through two boxes without guessing the base rate
Suppose, hypothetically, you take two ordinary, sender-paid Yu-Pack parcels to the same counter at the same time, both for the same recipient and destination. Both qualify for carry-in and multiple-parcel treatment.
The discount calculation is:
- Carry-in: 2 × ¥120 = ¥240.
- Multiple-parcel: 2 × ¥60 = ¥120.
- Combined reduction: ¥360.
If you also have a qualifying old sender’s copy, do not add another ¥120 across the two boxes. The repeat-address and multiple-parcel reductions are alternatives.
Call the correctly determined base charges B1 and B2. With no extra services in this hypothetical example, the payable total is B1 + B2 − ¥360. There is no need to invent a sample nationwide Yu-Pack price: each base charge depends on its own parcel and route.
Change one condition and recalculate
Now imagine the second box is going to a different address, and neither destination has a qualifying old sender’s copy. Carry-in still produces a ¥240 total reduction, but the multiple-parcel reduction is unavailable. The difference from the first scenario is ¥120 across the pair.
Alternatively, if you take only one parcel and have the required sender’s copy for that same destination, the conventional reduction is ¥120 + ¥60 = ¥180.
These comparisons hold the mailing method fixed. They do not establish whether taking the parcels yourself is worthwhile after travel time or transport expenses. If a special trip costs more than the additional discount it creates, the postal reduction alone is not a complete cost comparison.
Keep app discounts out of this arithmetic
Japan Post’s Yu-Pack smartphone discount service has separate conditions and cannot be combined with these carry-in, repeat-address or multiple-parcel discounts. Do not subtract the conventional ¥180 again from an app price that already reflects its own discount. Japan Post: smartphone-service exclusion
Before paying, compare the proposed service on the label or screen with the rate basis you used. An identical destination does not make different pricing schemes interchangeable.
Prepare the evidence, then check the receipt
For repeat-address treatment, bring the actual qualifying sender’s copy. For multiple-parcel treatment, present the parcels together and check that the destination and service types match. If using a convenience store, establish that it accepts Yu-Pack before making the trip.
The practical order is: measure the finished parcels, determine their base charges, identify the eligible discount path, then check the total. A box-size calculation and a discount calculation solve different parts of the same mailing task. This guide does not quote a route-specific total or promise eligibility without the required documents.