How about
<TABLE style="BACKGROUND-COLOR: #ffffff; PADDING-LEFT: 2pt; PADDING-RIGHT: 2pt; FONT-FAMILY: Calibri,Arial; FONT-SIZE: 11pt" border=1 cellSpacing=0 cellPadding=0><COLGROUP><COL style="WIDTH: 30px; FONT-WEIGHT: bold"><COL style="WIDTH: 210px"><COL style="WIDTH: 75px"></COLGROUP><TBODY><TR style="TEXT-ALIGN: center; BACKGROUND-COLOR: #cacaca; FONT-SIZE: 8pt; FONT-WEIGHT: bold"><TD></TD><TD>A</TD><TD>B</TD></TR><TR style="HEIGHT: 18px"><TD style="TEXT-ALIGN: center; BACKGROUND-COLOR: #cacaca; FONT-SIZE: 8pt">1</TD><TD>Escalation Period (Months)</TD><TD style="TEXT-ALIGN: right">12</TD></TR><TR style="HEIGHT: 18px"><TD style="TEXT-ALIGN: center; BACKGROUND-COLOR: #cacaca; FONT-SIZE: 8pt">2</TD><TD>Term (Years)</TD><TD style="TEXT-ALIGN: right">5</TD></TR><TR style="HEIGHT: 18px"><TD style="TEXT-ALIGN: center; BACKGROUND-COLOR: #cacaca; FONT-SIZE: 8pt">3</TD><TD>Start Date</TD><TD style="TEXT-ALIGN: right">23/03/2007</TD></TR><TR style="HEIGHT: 18px"><TD style="TEXT-ALIGN: center; BACKGROUND-COLOR: #cacaca; FONT-SIZE: 8pt">4</TD><TD>Next Escalation Due In (months)</TD><TD style="TEXT-ALIGN: right">11</TD></TR></TBODY></TABLE>
<TABLE style="BORDER-BOTTOM-STYLE: groove; BORDER-BOTTOM-COLOR: #00ff00; BORDER-RIGHT-STYLE: groove; BACKGROUND-COLOR: #fffcf9; BORDER-TOP-COLOR: #00ff00; FONT-FAMILY: Arial; BORDER-TOP-STYLE: groove; COLOR: #000000; BORDER-RIGHT-COLOR: #00ff00; FONT-SIZE: 10pt; BORDER-LEFT-STYLE: groove; BORDER-LEFT-COLOR: #00ff00"><TBODY><TR><TD>
Spreadsheet Formulas</TD></TR><TR><TD><TABLE style="FONT-FAMILY: Arial; FONT-SIZE: 9pt" border=1 cellSpacing=0 cellPadding=2><TBODY><TR style="BACKGROUND-COLOR: #cacaca; FONT-SIZE: 10pt"><TD>Cell</TD><TD>Formula</TD></TR><TR><TD>B4</TD><TD>=DATEDIF(TODAY
(),LOOKUP
(EDATE(TODAY(),B1),EDATE(B3,B1*ROW(INDIRECT("1:"&B2)))),"m")</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
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Counts down the months remaining until the next escalation, can also return the date of the next escalation by cutting it to
=LOOKUP
(EDATE(TODAY(),B1),EDATE(B3,B1*ROW(INDIRECT("1:"&B2))))
Formula is dynamic with either result, updating to the next period when the existing one lapses.
As it stands the formula will return a #NUM! error if the lease has expired, could easily be wrapped to return "expired" or similar if it's of use.
i.e. =IFERROR(
formula,"Expired")
To revert it to your original 0 / 1 request
=--NOT(DATEDIF(TODAY
(),LOOKUP
(EDATE(TODAY(),B1),EDATE(B3,B1*ROW(INDIRECT("1:"&B2)))),"m"))