According to BMG, IF YOU WAIT by LONDON GRAMMAR has sold 2,000,000 copies worldwide. The album sold best in United Kingdom (642,000 copies), Germany (100,000 copies) and Australia (70,000 copies).
IF YOU WAIT certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
70,000 | 1x Platinum |
Australia Sales: 70,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Belgium |
30,000 | 1x Platinum | 2014 |
Belgium Sales: 30,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2014
|
 Denmark |
10,000 | 1x Gold | 20 March, 2018 |
Denmark Sales: 10,000
Certification / note: 1x Gold
Certification Date / sales as of: 20 March, 2018
|
 Germany |
100,000 | 1x Gold | 2015 |
Germany Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 2015
|
 United Kingdom |
642,000 | 2x Platinum | 10 June, 2016 |
United Kingdom Sales: 642,000
Certification / note: 2x Platinum
Certification Date / sales as of: 10 June, 2016
|
| Worldwide sales | 2,000,000 | BMG |
Total
Sales: 2,000,000
Source: BMG
|
Year-end chart performance for IF YOU WAIT
| Chart 2013 | Rank | Sales |
| Australian Albums (ARIA) |
87 | |
| Belgian Albums (Ultratop Wallonia) |
183 | |
 French Albums (SNEP) |
95 | |
| UK Albums (Charts Plus) |
33 | |
| Chart 2014 | Rank | Sales |
| Australian Albums (ARIA) |
23 | |
| Belgian Albums (IFPI) |
6 | |
| Belgian Albums (Ultratop Flanders) |
9 | |
| Belgian Albums (Ultratop Wallonia) |
9 | |
 Dutch Albums (Album Top 100) |
55 | |
| French Albums (SNEP) |
21 | |
 Swiss Albums (Schweizer Hitparade) |
27 | |
| UK Albums (Official Charts) |
17 | |
| Chart 2015 | Rank | Sales |
| Belgian Albums (Ultratop Flanders) |
27 | |
| Belgian Albums (Ultratop Wallonia) |
48 | |
| Chart 2019 | Rank | Sales |
| Belgian Albums (Ultratop Flanders) |
189 | |
| Chart 2021 | Rank | Sales |
| Belgian Albums (Ultratop Flanders) |
189 |