EXHIBIT 99.5

Contractual Cash Obligations



|                                               |  |       |       |  |                       |  |     |                  |  |  |                  |  |  |                |     |  |  |  |       | 
|---------------------------------------------- |  | ----- | ----- |  | --------------------- |  | --- | ---------------- |  |  | ---------------- |  |  | -------------- | --- |  |  |  | ----- | 
|As at December 31, 2011 (Cdn$ millions)        |  | Total |       |  | Due inLess Than1 Year |  |     | Due in1 - 3Years |  |  | Due in4 - 5Years |  |  | Due After5 Yrs |    
|Long-term debt                                 |  |       | 801   |  |                       |  |    |                  |  |  | 6                |  |  |                | 299 |  |  |  | 496   | 
|BPLP capital lease                             |  |       | 146   |  |                       |  | 15  |                  |  |  | 35               |  |  |                | 43  |  |  |  | 53    | 
|Interest on long-term debt                     |  |       | 270   |  |                       |  | 43  |                  |  |  | 85               |  |  |                | 67  |  |  |  | 76    | 
|Interest on BPLP capital lease                 |  |       | 43    |  |                       |  | 10  |                  |  |  | 17               |  |  |                | 11  |  |  |  | 4     | 
|Provision for reclamation                      |  |       | 577   |  |                       |  | 10  |                  |  |  | 40               |  |  |                | 47  |  |  |  | 480   | 
|Provision for waste disposal                   |  |       | 22    |  |                       |  | 4   |                  |  |  | 7                |  |  |                | 11  |  |  |  |      | 
|Other liabilities                              |  |       | 507   |  |                       |  |    |                  |  |  |                 |  |  |                |    |  |  |  | 507   | 
|Unconditional product purchase commitments1, 2 |  |       | 1,457 |  |                       |  | 308 |                  |  |  | 581              |  |  |                | 128 |  |  |  | 440   | 
|Total contractual cash obligations             |  |       | 3,823 |  |                       |  | 390 |                  |  |  | 771              |  |  |                | 606 |  |  |  | 2,056 | 



|1 | Denominated in US dollars. Converted to Canadian dollars at the December 31, 2011 rate of Cdn $1.017.
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|2 | Virtually all of Cameco Corporations product purchase obligations are under long-term, fixed-price arrangements.
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Commercial Commitments



|                                        |  |                         |     | 
|--------------------------------------- |  | ----------------------- | --- | 
|As at December 31, 2011 (Cdn$ millions) |  | Total amounts committed |    
|Standby letters of credit1              |  |                         | 670 | 
|BPLP guarantees2                        |  |                         | 69  | 
|Total commercial commitments            |  |                         | 739 | 



|1 | The standby
letters of credit maturing in 2012 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.
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|2 | At December 31, 2011, Cameco Corporations total commitment for financial assurances given on behalf of BPLP was estimated to be Cdn $77
million. Refer to note 31 in the 2011 consolidated audited financial statements.
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