# Speaking the language: the acronyms and vocabulary that separate insiders from outsiders
A JPMorgan analyst asks the CFO on an earnings call: "Can you walk us through the CET1 build and whether NIM held up given the deposit beta?" The CFO answers in the same shorthand. Nobody explains the letters. If you cannot follow that exchange, you are an outsider, no matter how senior you are.
This lesson decodes the alphabet soup. By the end you will follow a credit committee or an earnings call without raising your hand to ask what the letters mean.
Banking runs on a small set of ratios that regulators, investors, and management all track. Once you know the roughly ten that matter, most conversations become legible. Think of them in three buckets: profitability, capital and liquidity, and asset quality.
NIM (Net Interest Margin). The spread a bank earns between what it charges on loans and pays on deposits, divided by its interest-earning assets. If a bank lends at 6% and funds at 2%, its NIM is roughly 4%. NIM is the single most-watched profitability number for traditional lenders.
ROE (Return on Equity). Net profit divided by shareholder equity. It answers: for every dollar shareholders put in, how much profit comes back? A healthy large bank targets a low-to-mid teens ROE.
ROTE (Return on Tangible Equity). The same idea, but it strips out intangibles like goodwill from the denominator. Because acquisitions inflate equity with goodwill, ROTE is usually higher than ROE and is the number European banks especially like to quote. When Barclays or Deutsche Bank sets a target, it is almost always in ROTE.
CIR (Cost-to-Income Ratio). Operating costs divided by operating income. Lower is better. A CIR of 50% means the bank spends 50 cents to earn a dollar of revenue. European banks have historically run higher CIRs (often 60% plus) than the most efficient US and Nordic peers (closer to 40 to 50%).
A bank reports net profit of 12 billion and tangible equity of 90 billion.
ROTE = 12 / 90 = 13.3%
Now the same bank has total equity of 110 billion (the extra 20 billion is goodwill).
ROE = 12 / 110 = 10.9%
Same profit, lower ratio. This is exactly why management picks whichever one flatters. Always check which denominator they used.
These come straight from the Basel III framework, the global bank capital rules set by the Basel Committee on Banking Supervision and implemented in the EU through the Capital Requirements Regulation and in the US by the Federal Reserve.
RWA (Risk-Weighted Assets). Not all assets carry equal risk. A government bond might carry a 0% risk weight; an unsecured corporate loan carries 100% or more. RWA is the sum of a bank's assets weighted by riskiness. It is the denominator for capital ratios, so shrinking RWA is a common lever to boost them.
CET1 (Common Equity Tier 1). The highest quality capital: essentially common shares and retained earnings. The CET1 ratio is CET1 capital divided by RWA. This is the headline solvency number. Large European and US banks typically run CET1 ratios in the 12 to 15% range (as of 2025 disclosures); regulatory minimums plus buffers land well below that, so the gap is the bank's safety cushion.
LCR (Liquidity Coverage Ratio). Can the bank survive a 30-day stress scenario? It measures high-quality liquid assets against expected 30-day cash outflows. The regulatory minimum is 100%. The 2023 collapse of Silicon Valley Bank was, in part, a liquidity story: deposits fled faster than the bank could fund.
NSFR (Net Stable Funding Ratio). The longer-horizon cousin of LCR. It checks whether long-term assets are backed by stable funding over a one-year window. Minimum is also 100%.
NPL (Non-Performing Loan). A loan where the borrower is 90 days or more past due, or unlikely to repay in full. The NPL ratio (non-performing loans divided by total loans) signals how much of the book is going bad.
For context, the euro area aggregate NPL ratio has hovered around 2% in recent years (European Banking Authority data), down sharply from the post-2011 crisis peaks above 7%. US NPL levels are similarly low in normal conditions. When you hear an analyst worry about "asset quality migration," they mean NPLs are creeping up.
Coverage ratio. The share of NPLs already provisioned for as losses. A 60% coverage ratio means the bank has set aside reserves for 60% of its bad loans.
Fluency also means knowing the scale of the field. Rough, commonly cited estimates (verify against current sources before quoting):
The structural contrast matters: the US is deep and market-funded (much lending happens through capital markets), while Europe is more bank-funded (companies rely more on bank loans). That single fact explains a lot of the transatlantic differences in regulation and profitability.
For live figures, the FDIC Quarterly Banking Profile is the authoritative free source for US data, and the EBA Risk Dashboard covers Europe.
Vérification des acquis
1. Why is ROTE typically higher than ROE for a bank that has grown through acquisitions?
2. A bank reports a cost-to-income ratio (CIR) of 45%. What does this indicate about its operations?
3. A bank lends at 7% and funds itself at 3%. Conceptually, what does its resulting NIM of roughly 4% represent?
4. Select ALL correct answers about how banking acronyms function among insiders.
Sélectionnez toutes les réponses correctes.
5. Select ALL correct answers that correctly distinguish among the profitability metrics.
Sélectionnez toutes les réponses correctes.
Now re-read that opening question. "Can you walk us through the CET1 build and whether NIM held up given the deposit beta?"
Translation: *How did your top-tier capital ratio change this quarter, and did your lending spread hold up given that you had to pay depositors more?* Deposit beta is the share of a central bank rate rise that a bank passes on to depositors. A high beta squeezes NIM.
You now understand every term.
When you evaluate a bank, whether as an investor, a counterparty, or a job candidate, run these quick checks:
1. Which equity denominator? If they trumpet ROTE, calculate ROE too. A big gap means lots of goodwill from past acquisitions.
2. CET1 versus requirement. A ratio of 14% sounds strong, but compare it to the bank's specific regulatory requirement. The buffer is what counts.
3. LCR and NSFR both above 100%? If either is thin, funding stress is a live risk. SVB is the cautionary tale.
4. NPL trend, not just level. A 2% NPL ratio rising toward 3% is worse than a stable 3%. Direction beats snapshot.
5. CIR trajectory. Rising costs against flat income signals a management problem, not a market one.
These five checks take fifteen minutes with a bank's quarterly results and separate a fluent operator from someone reading headlines.