EXHIBIT 99.5

Contractual Cash Obligations



|                                               |  |       |       |  |                      |  |     |                 |  |  |                  |  |  |               |     |  |  |  |       | 
|---------------------------------------------- |  | ----- | ----- |  | -------------------- |  | --- | --------------- |  |  | ---------------- |  |  | ------------- | --- |  |  |  | ----- | 
|As at December 31, 2012 (Cdn$ millions)        |  | Total |       |  | Due inLessThan1 Year |  |     | Duein1 - 3Years |  |  | Duein4 - 5 Years |  |  | DueAfter5 Yrs |    
|Long-term debt                                 |  |       | 1,300 |  |                      |  |    |                 |  |  | 300              |  |  |               |    |  |  |  | 1,000 | 
|BPLP capital lease                             |  |       | 131   |  |                      |  | 16  |                 |  |  | 39               |  |  |               | 48  |  |  |  | 28    | 
|Interest on long-term debt                     |  |       | 543   |  |                      |  | 62  |                 |  |  | 125              |  |  |               | 97  |  |  |  | 259   | 
|Interest on BPLP capital lease                 |  |       | 33    |  |                      |  | 9   |                 |  |  | 15               |  |  |               | 8   |  |  |  | 1     | 
|Provision for reclamation                      |  |       | 698   |  |                      |  | 16  |                 |  |  | 32               |  |  |               | 54  |  |  |  | 596   | 
|Provision for waste disposal                   |  |       | 17    |  |                      |  | 3   |                 |  |  | 6                |  |  |               | 8   |  |  |  |      | 
|Other liabilities                              |  |       | 586   |  |                      |  |    |                 |  |  |                 |  |  |               |    |  |  |  | 586   | 
|Unconditional product purchase commitments1, 2 |  |       | 1,220 |  |                      |  | 436 |                 |  |  | 216              |  |  |               | 92  |  |  |  | 476   | 
|                                               |  |       |       |  |                      |  |     |                 |  |  |                  |  |  |               |     |  |  |  |       | 
|Total contractual cash obligations             |  |       | 4,528 |  |                      |  | 542 |                 |  |  | 733              |  |  |               | 307 |  |  |  | 2,946 | 
|                                               |  |       |       |  |                      |  |     |                 |  |  |                  |  |  |               |     |  |  |  |       | 



|1 | Denominated in US dollars. Converted to Canadian dollars at the December 31, 2012 rate of Cdn $1.00.
|- | ----------------------------------------------------------------------------------------------------

|2 | Virtually all of Cameco Corporations product purchase obligations are under long-term, fixed-price arrangements.
|- | -----------------------------------------------------------------------------------------------------------------

Commercial Commitments



|                                        |  |                       |     | 
|--------------------------------------- |  | --------------------- | --- | 
|As at December 31, 2012 (Cdn$ millions) |  | Totalamountscommitted |    
|Standby letters of credit1              |  |                       | 672 | 
|BPLP guarantees2                        |  |                       | 59  | 
|                                        |  |                       |     | 
|Total commercial commitments            |  |                       | 731 | 
|                                        |  |                       |     | 



|1 | The standby
letters of credit maturing in 2013 were issued with a one-year term and will be automatically renewed on a year-by-year basis until the underlying obligations are resolved. These obligations are primarily the decommissioning and reclamation of
Cameco Corporations mining and conversion facilities. As such, the letters of credit are expected to remain outstanding well into the future.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|2 | At December 31, 2012, Cameco Corporations total commitment for financial assurances given on behalf of BPLP was estimated to be Cdn $63
million. Refer to note 31 in the 2012 consolidated audited financial statements.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------