According to Universal Music Japan, TIDAL by FIONA APPLE has sold 3,500,000 copies worldwide. The album sold best in United States (3,000,000 copies), Canada (100,000 copies) and France (100,000 copies).
TIDAL certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 1998 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1998
|
 France |
100,000 | 1x Gold | 14 March, 2000 |
France Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 14 March, 2000
|
 United States |
3,000,000 | 3x Platinum | 1 April, 1999 |
United States Sales: 3,000,000
Certification / note: 3x Platinum
Certification Date / sales as of: 1 April, 1999
|
| Worldwide sales | 3,500,000 | Universal Music Japan |
Total
Sales: 3,500,000
Source: Universal Music Japan
|
Year-end chart performance for TIDAL
| Chart 1997 | Rank | Sales |
| US Albums (Billboard 200) |
41 | |
| US Albums (Soundscan) |
35 | 1,500,000 |
| Chart 1998 | Rank | Sales |
| US Albums (Billboard 200) |
98 |