| Cover | Jun. 20, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jun. 20, 2024 |
| Entity File Number | 000-55747 |
| Entity Registrant Name | UPAY, INC. |
| Entity Central Index Key | 0001677897 |
| Entity Tax Identification Number | 37-1793622 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 3010 LBJ Highway |
| Entity Address, Address Line Two | 12th Floor |
| Entity Address, City or Town | Dallas |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75234 |
| City Area Code | 972 |
| Local Phone Number | 888-6052 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
