NEW YORK (TheStreet) -- Citigroup (C - Get Report) has quite a bit riding on this year's round of Federal Reserve stress tests, with a stubbornly low stock valuation and analysts' expectation of a major deployment of excess capital.

Citi's shares closed at $47.61 on Monday. The shares are down 9% this year, following a 32% return during 2013. The shares trade for 0.9 times their revised Dec. 31 tangible book value of $55.31, and for 8.3 times the consensus 2015 earnings estimate of $5.74, among analysts polled by Thomson Reuters. The consensus 2014 EPS estimate is $4.91, increasing from $4.39 in 2013.

Those are by far the cheapest price-to-tangible-book and price-to-forward-earnings ratios among large-cap U.S. banks.

One reason Citi is cheap is that the bank is still going through a multiyear transition to trim noncore assets placed within Citi Holdings, while simplifying its business and shoring up its capital ratios. Citigroup's 2013 return on average tangible common equity (ROTCE) was a mediocre 8.20%, increasing from 4.80% the previous year, according to Thomson Reuters Bank Insight.

Among the 24 component companies of the KBW Bank Index, only Bank of America (BAC - Get Report) had a lower 2013 ROTCE than Citi, at 7.94%. But Bank of America's stock has a much higher valuation, closing at $16.30 Monday and trading for 1.2 times tangible book value and 10.1 times the consensus 2015 EPS estimate of $1.62.

One reason Bank of America trades higher than Citi is investors' perception that BAC's performance is so closely tied to the improving U.S. economy and housing market. Citi derives most of its revenue and earnings from outside the United States.

But UBS analyst Derek De Vries sees another problem, which is that Citigroup's valuation implies that the company's investment bank is "only worth 1x 2015 earnings." In a note to clients on Monday, the analyst said he arrived at that valuation by "applying competitor P/E multiples to Citigroup's different earnings streams, and attributing a net present value to the $42.5 bn of [deferred tax assets valuation allowance] DTA currently excluded from Citi's regulatory capital."

"We believe that isn't sustainable -- either the market needs to put a higher earnings multiple on Citi's investment bank, or management will de-emphasize the business line and return capital to shareholders," De Vries wrote.

Whether or not Citigroup chooses to deemphasize its investment bank and free up even more excess capital, investors are expecting a major announcement from the bank on March 26, after the Federal Reserve announces the results of its annual Comprehensive Capital Analysis (CCAR) and Review for major U.S. banks.

CCAR is really the second round of the Fed's annual stress-test process. First, the regulator will apply a "severely adverse" economic scenario to the banks' Sept. 30 financials, to see if the banks can remain well-capitalized with minimum Tier 1 common equity ratios of 5% through the scenario's cycle. Those results will be announced on March 20, after which the Fed will incorporate banks' annual plans to deploy excess capital through dividend increases, share buybacks and acquisitions, to the same severely adverse scenario.

Citigroup was approved last year to repurchase up to $1.2 billion in common stock from the second quarter of 2013 through the first quarter of 2014. The bank also left its quarterly dividend at a nominal penny a share.

De Vries expects Citi to be approved to raise the quarterly dividend to 15 cents and to receive Federal Reserve approval for $7.5 billion in share buybacks through the first quarter of 2015, which "is well above consensus (which we believe is ~$0.10 of dividend and ~$4-5 bn of share buyback)," he wrote.

A significant reduction in Citigroup's share count, combined with a lower level of excess capital, will push up EPS while raising ROTCE. Those factors, along with the bank's current low valuation, could feed plenty of growth for the stock over the next year. De Vries rates Citi a "buy," with a 12-month price target of $63, implying 32% upside for the shares.

Morgan Stanley analyst Betsy Graseck, in a note to clients on Feb. 25, wrote that Citi was "well positioned for a capital return hike given last year's 2nd best post stress test capital ratio, coupled with its lowest capital return in our coverage." Graseck expects Citigroup to raise the dividend to a nickel and to gain approval for $6.457 in buybacks. She rates Citi "overweight," with a price target of $62.00.

KBW analyst Fred Cannon said he estimates Citi to increase its quarterly dividend to a nickel a share, but he's even more enthusiastic about buybacks than De Vries, estimating approval for $7.619 billion in share repurchases. That would make for a total estimated capital deployment of $8.212 billion, or 57% of Citi's earnings from the second quarter of 2014 through the first quarter of 2015. Cannon rates Citigroup "outperform," with a price target of $58.00.

Looking further ahead, De Vries expects the wind-down of Citi Holdings and recapture of DTA to "allow Citi to return a higher proportion of capital than peers. As we move forward towards 2015 we think the underlying cost story and capital return potential will become more apparent and expect Citi shares to re-rate." And that means a significantly higher stock multiple.

Citigroup's shares were up 1.2% in early trading Tuesday, to $48.18.

This chart shows the performance of Citi's stock against the KBW Bank Index and the S&P 500 since the end of 2011:

C Chart data by YCharts

Why You Should Celebrate Bank Stress Tests

Philip W. van Doorn is a member of TheStreet's banking and finance team, commenting on industry and regulatory trends. He previously served as the senior analyst for Ratings, responsible for assigning financial strength ratings to banks and savings and loan institutions. Mr. van Doorn previously served as a loan operations officer at Riverside National Bank in Fort Pierce, Fla., and as a credit analyst at the Federal Home Loan Bank of New York, where he monitored banks in New York, New Jersey and Puerto Rico. Mr. van Doorn has additional experience in the mutual fund and computer software industries. He holds a bachelor of science in business administration from Long Island University.