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<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM 8-K</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>CURRENT REPORT<BR>
Pursuant to Section&nbsp;13 or 15(d) of the
Securities Exchange Act of 1934</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>October&nbsp;19, 2007<BR>
(Date of earliest event reported)</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>Potash Corporation of Saskatchewan Inc.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD width="31%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="31%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="31%">&nbsp;</TD>
</TR>
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<TR valign="bottom">
    <TD align="center" valign="top"><B>Canada</B><BR>
(State or other jurisdiction of incorporation)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>1-1035</B><BR>
(Commission File Number)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>Not Applicable</B><BR>
(IRS Employer Identification No.)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">122 &#151; 1<SUP style="font-size: 85%; vertical-align: text-top">st</SUP> Avenue South<BR>
Saskatoon, Saskatchewan, Canada S7K 7G3<BR>
(Address of principal executive offices, including zip code)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">306 / 933-8500<BR>
(Registrant&#146;s telephone number, including area code)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Not Applicable</B><BR>
(Former name or former address, if changed since last report)</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy
the filing obligation of the registrant under any of the following provisions (see General
Instruction A.2.):
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17
CFR 240.14d-2(b))</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17
CFR 240.13e-4(c))</TD>
</TR>

</TABLE>
</DIV>

<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>







<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
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<DIV style="font-family: 'Times New Roman',Times,serif">







<!-- link1 "Item&nbsp;1.01 Entry into a Material Definitive Agreement" -->
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="left" style="margin-top: 12pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; background: transparent; color: #000000">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left"><B>Item&nbsp;1.01</B></TD>
    <TD>&nbsp;</TD>
    <TD><B>Entry into a Material Definitive Agreement.</B></TD>
</TR>
</TABLE>
</DIV>
<!-- link1 "Item&nbsp;2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant" -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="left" style="margin-top: 12pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; background: transparent; color: #000000">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left"><B>Item&nbsp;2.03</B></TD>
    <TD>&nbsp;</TD>
    <TD><B>Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.</B></TD>
</TR>
</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On October&nbsp;19, 2007, Potash Corporation of Saskatchewan Inc. (&#147;PotashCorp&#148;) entered into a
Fifth Amending Agreement to its term credit agreement with The Bank of Nova Scotia and other
financial institutions dated as of September&nbsp;25, 2001 and previously amended on September&nbsp;23, 2003,
September&nbsp;21, 2004, September&nbsp;20, 2005 and September&nbsp;27, 2006.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Fifth Amending Agreement (i)&nbsp;adds an accordion feature that, subject to certain
conditions, enables PotashCorp to increase its total borrowing capacity under the credit facility
to $1.25&nbsp;billion, (ii)&nbsp;amends the definition of &#147;EBITDA&#148; to exclude unrealized gains and losses in
respect of hedging instruments, (iii)&nbsp;increases the maximum allowable debt to capital ratio from
0.55:1.00 to 0.60:1.00, (iv)&nbsp;increases the maximum allowable debt of the subsidiaries of PotashCorp
to $650&nbsp;million in the aggregate and (v)&nbsp;extends the maturity date of the credit agreement from
September&nbsp;30, 2011 to May&nbsp;31, 2013.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The foregoing description is qualified in its entirety by reference to the Fifth Amending
Agreement, which is attached hereto as <BR>Exhibit 4(a) and incorporated herein by reference.
</DIV>

<!-- link1 "Item&nbsp;9.01 Financial Statements and Exhibits" -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="margin-top: 12pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; background: transparent; color: #000000">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left"><B>Item&nbsp;9.01</B></TD>
    <TD>&nbsp;</TD>
    <TD><B>Financial Statements and Exhibits</B></TD>
</TR>
</TABLE>
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit Description</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4(a)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Syndicated Term Credit Facility Fifth Amending Agreement between The Bank of Nova
Scotia and other financial institutions and the registrant dated October&nbsp;19, 2007.</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><u><B>SIGNATURE</B></u>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="45%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="19%">&nbsp;</TD>
</TR>
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<TR valign="bottom">
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" valign="top" align="left" nowrap><B>POTASH CORPORATION OF SASKATCHEWAN INC.</B></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">By:</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">/s/&nbsp;&nbsp;Joseph Podwika&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Name:
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Joseph Podwika
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Title:
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="white-space: nowrap">Senior Vice President, General Counsel and Secretary</FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Dated:
October&nbsp;22, 2007
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<!-- link1 "Index to Exhibits" -->

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>Index to Exhibits</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="9%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="88%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit Description</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">4(a)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Syndicated Term Credit Facility Fifth Amending Agreement between The Bank of Nova Scotia
and other financial institutions and the registrant dated October&nbsp;19, 2007.</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>




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e8vk
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
October 19, 2007
(Date of earliest event reported)
Potash Corporation of Saskatchewan Inc.
(Exact name of registrant as specified in its charter)
Canada
(State or other jurisdiction of incorporation)
1-1035
(Commission File Number)
Not Applicable
(IRS Employer Identification No.)
122 — 1
st
Avenue South
Saskatoon, Saskatchewan, Canada S7K 7G3
(Address of principal executive offices, including zip code)
306 / 933-8500
(Registrant's telephone number, including area code)
Not Applicable
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy
the filing obligation of the registrant under any of the following provisions (see General
Instruction A.2.):
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17
CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17
CFR 240.13e-4(c))
Item 1.01
Entry into a Material Definitive Agreement.
Item 2.03
Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.
On October 19, 2007, Potash Corporation of Saskatchewan Inc. ("PotashCorp") entered into a
Fifth Amending Agreement to its term credit agreement with The Bank of Nova Scotia and other
financial institutions dated as of September 25, 2001 and previously amended on September 23, 2003,
September 21, 2004, September 20, 2005 and September 27, 2006.
The Fifth Amending Agreement (i) adds an accordion feature that, subject to certain
conditions, enables PotashCorp to increase its total borrowing capacity under the credit facility
to $1.25 billion, (ii) amends the definition of "EBITDA" to exclude unrealized gains and losses in
respect of hedging instruments, (iii) increases the maximum allowable debt to capital ratio from
0.55:1.00 to 0.60:1.00, (iv) increases the maximum allowable debt of the subsidiaries of PotashCorp
to $650 million in the aggregate and (v) extends the maturity date of the credit agreement from
September 30, 2011 to May 31, 2013.
The foregoing description is qualified in its entirety by reference to the Fifth Amending
Agreement, which is attached hereto as
Exhibit 4(a) and incorporated herein by reference.
Item 9.01
Financial Statements and Exhibits
Exhibit Number
Exhibit Description
4(a)
Syndicated Term Credit Facility Fifth Amending Agreement between The Bank of Nova
Scotia and other financial institutions and the registrant dated October 19, 2007.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.
POTASH CORPORATION OF SASKATCHEWAN INC.
By:
/s/  Joseph Podwika
Name:
Joseph Podwika
Title:
Senior Vice President, General Counsel and Secretary
Dated:
October 22, 2007
Index to Exhibits
Exhibit Number
Exhibit Description
4(a)
Syndicated Term Credit Facility Fifth Amending Agreement between The Bank of Nova Scotia
and other financial institutions and the registrant dated October 19, 2007.