EXHIBIT 99 (a)
        NASDAQ: BOKF



For Further Information Contact:          Steven Nell
                                          Chief Financial Officer
                                          (918)588-6319

                                          Danny M. Boyd
                                          Corporate Communications
                                          (918)588-6348

         BOK Financial Reports Record Earnings for 15th Consecutive Year
               Fourth Quarter Shows Strong Loan and Deposit Growth

     TULSA, Okla. (Tuesday, Jan. 31, 2006) - BOK Financial Corporation announced
its 15th  consecutive year of record earnings with reported net income of $201.5
million,  or $3.01 per diluted  share,  for the year ended Dec.  31,  2005.  Net
income for 2005 increased $22.5 million, or 13 percent over the previous year.

     Growth  in net  interest  revenue  and fees and  commissions  revenue  both
contributed to the increase in net income.  Net interest revenue increased $26.1
million,  or 6 percent,  for the year due primarily to an 11 percent increase in
average  outstanding loans. Fees and commissions  revenue grew $33.0 million, or
11 percent, as business lines continued to expand.  Operating expenses increased
$27.9 million, or 6 percent,  due to higher personnel and data processing costs.
The provision for credit  losses for 2005 was $12.4  million,  $8.0 million less
than 2004 as credit quality continued to be strong.

     "Loan growth and  increased  revenue from our  fee-based  sources of income
were important contributors to our success in 2005," said President and CEO Stan
Lybarger.  "Although  rising  short-term  interest  rates and narrowing  margins
currently  present a challenge,  the company is positioned for long-term  growth
and we expect our earnings growth trend to continue."

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     Net income for the fourth quarter of 2005 totaled $48.2  million,  or $0.72
per diluted share,  compared with $46.6 million, or $0.70 per diluted share, for
the fourth quarter of 2004.

     Net interest revenue for the fourth quarter of 2005 increased $9.9 million,
or 9 percent,  compared  with the same period of 2004.  Average  earning  assets
increased $1.3 billion, including a $1.1 billion increase in average outstanding
loans.  The growth in earning  assets was  funded  primarily  by a $1.1  billion
increase in deposits.

     Outstanding  loans for the company grew at an annualized rate of 12 percent
during the fourth  quarter.  Commercial  loans grew at an 18 percent  annualized
rate  while  commercial  real  estate  loans grew at a 4 percent  rate.  Energy,
manufacturing  and  agriculture  sectors of the  portfolio  provided much of the
commercial loan growth.

     Loans in markets  outside of Oklahoma  increased  at a combined  annualized
rate of 25 percent during the fourth quarter and represented 41 percent of total
outstanding  loans at year-end.  Loans in the Texas market grew at an 18 percent
rate.  Annualized  loan  growth in New Mexico and  Arizona was 24 percent and 39
percent,  respectively.  Loans in both the Colorado and Arkansas markets grew 49
percent.

     "Fourth quarter loan growth was strong in all regional  markets,"  Lybarger
said.  "Regional  markets  contributed  nearly 45  percent to our  earnings  and
continue to grow in importance to the company."

     Total  deposits  increased  $976 million  during the fourth  quarter,  a 38
percent annualized growth rate. Demand deposits and interest bearing transaction
accounts  grew at annualized  rates of 25 percent and 82 percent,  respectively.
The  flat  yield  curve  during  the  fourth   quarter  led  many  customers  to
shorter-term deposit products.  Liquidity provided by these deposits was used to
reduce  short-term  borrowings by $836 million.  Total  deposits in the regional
markets  increased  at a 48 percent  annual  rate  during  the  fourth  quarter,
including strong growth in both Texas and Colorado.

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     Net  interest  margin  for the  fourth  quarter  of 2005 was 3.34  percent,
compared  with 3.38 percent for the fourth  quarter of 2004 and 3.32 percent for
the third quarter of 2005. Improvement in the net interest margin for the fourth
quarter of 2005 compared with the  preceding  quarter was primarily  driven by a
$370 million increase in average loans, which are generally higher-yielding than
other earning assets,  and a $648 million  increase in average  deposits,  which
generally are lower-costing than other funding sources.  Net interest margin for
the fourth quarter of 2005 was reduced 3 basis points by $299 million of average
margin assets the company carries in support of its derivatives  business.  Fees
earned on margin  assets,  which totaled $3.4 million for the fourth  quarter of
2005,  are included in  non-interest  revenue while the related cost of funds is
included in interest expense.

     Fees and commissions  revenue increased $11.1 million,  or 14 percent,  and
represented  43  percent  of  total  revenue  for the  fourth  quarter  of 2005.
Transaction  card fees and trust revenue grew $2.4 million,  or 14 percent,  and
$1.7 million, or 12 percent,  respectively.  Transaction card revenue growth was
driven by merchant  discounts and check card fees.  Trust assets,  which are the
basis for much of the growth in trust fees,  totaled  $28.5  billion at Dec. 31,
2005, compared with $24.6 billion a year ago.

     The provision for credit losses was $4.5 million for the fourth  quarter of
2005 compared with $4.4 million for the fourth  quarter of 2004 and $4.0 million
for the third  quarter of 2005.  Net  charge-offs  totaled  $7.4 million for the
fourth  quarter of 2005,  compared  with $6.4 million for the fourth  quarter of
2004 and $3.3 million for the third quarter of 2005.  BOK Financial had reserved
this credit exposure in prior periods. Consequently, no additional provision for
credit losses was recognized at the time of charge-off.

     Fourth quarter loan  charge-offs were higher than losses in the first three
quarters,  but there is no expectation  of a trend toward higher  charge-offs in
the near term.  Instead, we see a gradual migration toward more normal loan loss
levels over time.  Non-performing loans ended the year at the lowest level since
1999.

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     Reserves for credit losses, which include the allowance for loan losses and
a reserve for credit risk on unfunded loan commitments, totaled $124 million, or
1.37 percent of  outstanding  loans and 495 percent of  non-performing  loans at
Dec. 31, 2005. Reserves for credit losses were 1.44 percent of outstanding loans
and 341 percent of non-performing  loans at Sept. 30, 2005.  Nonperforming loans
totaled $25 million at Dec. 31, 2005,  down $12 million  since the  beginning of
the fourth quarter.

     Operating expenses totaled $123.9 million for the fourth quarter of 2005, a
$12.3 million, or 11 percent,  increase from the same period of 2004.  Personnel
costs grew $6.5 million or 11 percent.  Regular  compensation  expense increased
$4.7 million or, 12 percent, due to a 5 percent increase in average compensation
per  full-time  equivalent  employee  and  a 7  percent  increase  in  staffing.
Personnel  expense for the fourth quarter of 2005 included a $384,000 charge for
the curtailment of the company's pension plan. As previously announced, accruals
for future service under the  defined-benefit  pension plan will be discontinued
and enhancements to the  defined-contribution  thrift plan will become effective
April 1, 2006. Data processing and communications  expense grew $2.9 million, or
19 percent,  due to increases of $1.5 million in data  processing  systems costs
and $1.4 million in transaction card processing costs. Both increases  reflected
growth in processing volumes.

     BOK  Financial  is a regional  financial  services  company  that  provides
commercial  and  consumer  banking,  investment  and  trust  services,  mortgage
origination and servicing,  and an electronic funds transfer  network.  Holdings
include Bank of  Albuquerque,  N.A.,  Bank of Arizona,  N.A.,  Bank of Arkansas,
N.A.,  Bank of Oklahoma,  N.A.,  Bank of Texas,  N.A.,  Colorado  State Bank and
Trust,  N.A., BOSC, Inc. and the TransFund  electronic funds network.  Shares of
BOK  Financial  are  traded  on the  NASDAQ  under  the  symbol  BOKF.  For more
information, visit our website at www.bokf.com.

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     This news release  contains  forward-looking  statements  that are based on
management's  beliefs,   assumptions,   current   expectations,   estimates  and
projections  about BOK Financial Corp., the financial  services industry and the
economy  generally.   Words  such  as  "anticipates,"  "believes,"  "estimates,"
"expects,"  "forecasts,"  ""plans,"  "projects,"  variations  of such  words and
similar  expressions are intended to identify such  forward-looking  statements.
Management  judgments relating to, and discussion of the provision and allowance
for credit  losses  involve  judgments  as to future  events and are  inherently
forward-looking  statements.  Assessments that BOK Financial's  acquisitions and
other growth endeavors will be profitable are necessary  statements of belief as
to the outcome of future events based in part on information  provided by others
which BOK Financial has not  independently  verified.  These  statements are not
guarantees of future performance and involve certain risks,  uncertainties,  and
assumptions  which are  difficult  to predict  with  regard to  timing,  extent,
likelihood and degree of occurrence.  Therefore, actual results and outcomes may
materially  differ  from  what  is  expected,  implied  or  forecasted  in  such
forward-looking statements.  Internal and external factors that might cause such
a difference  include,  but are not limited to (1) the ability to fully  realize
expected  cost  savings from mergers  within the expected  time frames,  (2) the
ability of other  companies on which BOK  Financial  relies to provide goods and
services in a timely and  accurate  manner,  (3)  changes in interest  rates and
interest  rate  relationships,  (4) demand for  products and  services,  (5) the
degree of  competition  by  traditional  and  non-traditional  competitors,  (6)
changes in banking regulations,  tax laws, prices, levies, and assessments,  (7)
the impact of  technological  advances,  and (8) trends in customer  behavior as
well as  their  ability  to  repay  loans.  BOK  Financial  Corporation  and its
affiliates undertake no obligation to update, amend, or clarity  forward-looking
statements, whether as a result of new information, future events or otherwise.