Your choice of payment processors ultimately determines the number of people who can potentially purchase your product or service. Looking at the differences between PayPal and Google Checkout, I couldn't find a comparison of the countries each processor supported so I quickly whipped up my own using the data presented in the country list drop-downs that each processor presents on its sign up page.

Summary

PayPal supports substantially more countries than Google Checkout but it doesn't support a complete superset. If you want to reach the largest possible audience, you should implement both payment methods.

Details

Paypal supports 190 countries while Google Checkout supports just 142.

122 of those countries are the same (intersection).

By implementing both checkout methods, you can support a total of 210 countries (union).

These are the 68 countries that PayPal supports that Google Checkout does not (difference):

1. Andorra
2. Anguilla
3. Argentina
4. Aruba
5. Bhutan
6. Brazil
7. Burundi
8. Cayman Islands
9. Chad
10. China Worldwide
11. Comoros
12. Cook Islands
13. Democratic Republic of the Congo
14. Djibouti
15. Dominica
16. Eritrea
17. Ethiopia
18. Falkland Islands
19. Federated States of Micronesia
20. Fiji
21. French Guiana
22. French Polynesia
23. Gambia
24. Grenada
25. Guadeloupe
26. Guinea
27. Guinea Bissau
28. Guyana
29. Kiribati
30. Kyrgyzstan
31. Lesotho
32. Madagascar
33. Malawi
34. Marshall Islands
35. Martinique
36. Mauritania
37. Mayotte
38. Mongolia
39. Montserrat
40. Nauru
41. New Caledonia
42. Niger
43. Niue
44. Norfolk Island
45. Palau
46. Papua New Guinea
47. Pitcairn Islands
48. Republic of the Congo
49. Reunion
50. Saint Vincent and the Grenadines
51. Samoa
52. Sierra Leone
53. Solomon Islands
54. Somalia
55. South Korea
56. St. Helena
57. St. Kitts and Nevis
58. St. Lucia
59. St. Pierre and Miquelon
60. Suriname
61. Svalbard and Jan Mayen Islands
62. Swaziland
63. São Tomé and Príncipe
64. Tonga
65. Turks and Caicos Islands
66. Tuvalu
67. Vanuatu
68. Wallis and Futuna Islands

And here are the 20 countries that Google Checkout supports that PayPal does not (difference):

1. Bangladesh
2. Belarus
3. British Indian Ocean Territory
4. Cameroon
5. Côte d'Ivoire
6. Equatorial Guinea
7. Georgia
8. Ghana
9. Haiti
10. Lebanon
11. Macedonia
12. Moldova
13. Monaco
14. Nigeria
15. Pakistan
16. Paraguay
17. Puerto Rico
18. Serbia and Montenegro
19. Uzbekistan
20. Zimbabwe

I hope you find this useful. Download the python script (paypal-google.py.zip, 4KB).

The PayPal vs. Google Checkout: countries supported article by Aral Balkan, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial 2.0 UK: England License.