What it means
A charter is permission to do something ordinary companies cannot: hold other people's money on demand and create credit against it. In exchange the bank accepts continuous supervision, periodic examinations and detailed rules on how much capital it must hold against its lending.
For a business customer the practical difference is protection. Deposits at a chartered bank are typically insured up to a set limit per depositor per institution, and the supervisor has powers to intervene long before a bank actually runs out of money.
Capital adequacy is the central discipline. Regulators compare a bank's core equity with its risk weighted assets, a measure that scales each loan according to how risky it is, and set minimum ratios that must be met at all times.
Not every financial provider is chartered. Payment companies, some lending platforms and various savings apps operate under different licences, and customer money held with them often sits in a partner bank rather than being insured in the customer's own name.
The type of charter also determines who supervises the bank and which rules apply. A national charter brings a single federal supervisor and consistent treatment across states, while a state charter can be cheaper to obtain and better suited to a regional lender.
Chartered institutions also gain access to facilities that other lenders simply cannot reach. They can borrow from the central bank when short of liquidity and settle payments directly through the national clearing system, which is a large part of what makes a charter worth the supervisory burden that comes with it.
In practice
Real-world examples.
Example
A startup holding $400,000 of investor money moves it from a payment app to a chartered bank after learning that the app's balances sit with an unnamed partner institution. The founders wanted the deposit insurance and the named account relationship that a charter brings.
Example
A regional lender operating in two states converts from a state charter to a national one. The change costs more in supervisory fees but removes the need to satisfy two sets of state rules as it expands into four more states.
Example
A treasurer with $700,000 of surplus cash splits it across three chartered banks in amounts of $240,000, $240,000 and $220,000. Each balance stays under the $250,000 per depositor insurance limit, so the whole $700,000 is covered.
Formula
Calculation
Common equity tier 1 ratio = common equity tier 1 capital / risk weighted assets x 100
A mid sized chartered bank holds $66,000,000 of common equity tier 1 capital against $600,000,000 of risk weighted assets. Its ratio is $66,000,000 / $600,000,000 x 100 = 11.0%.
Against a common minimum of 4.5% plus a 2.5% conservation buffer, a combined 7.0%, the bank must hold 7.0% x $600,000,000 = $42,000,000 of core capital. It therefore carries $66,000,000 - $42,000,000 = $24,000,000 of surplus capital, or 4.0 percentage points of headroom.
Suppose it writes $100,000,000 of new commercial loans weighted at 100%. Risk weighted assets rise to $700,000,000, the ratio falls to $66,000,000 / $700,000,000 x 100 = 9.43%, and the surplus shrinks to $66,000,000 - (7.0% x $700,000,000) = $66,000,000 - $49,000,000 = $17,000,000.Case study
Seen in the real world.
The following is an illustrative and entirely fictional example. Kesterly Bank, an invented state chartered commercial lender, held $76,500,000 of common equity tier 1 capital against $850,000,000 of risk weighted assets, a ratio of $76,500,000 / $850,000,000 x 100 = 9.0%.
Its board wanted to add $150,000,000 of commercial property lending, all weighted at 100%. That would take risk weighted assets to $1,000,000,000 and cut the ratio to $76,500,000 / $1,000,000,000 x 100 = 7.65%, only 0.65 percentage points above the 7.0% requirement and far too thin for a supervisor to accept in a portfolio concentrated in one sector.
The fictional bank raised $30,000,000 of new equity before writing the loans. With $106,500,000 of core capital against $1,000,000,000 of risk weighted assets the ratio became 10.65%, and the growth went ahead with roughly the same headroom the bank had started with.
Watch out
Common mistakes.
- Assuming any business that offers an account number and a card is a chartered bank with insured deposits.
- Treating the deposit insurance limit as applying per account rather than per depositor at each institution.
- Reading a high capital ratio as proof of safety while ignoring how concentrated the loan book is.
Questions
People also ask.
What does a bank charter actually grant?
Legal permission to take deposits from the public and lend against them, in exchange for supervision, capital rules and reporting obligations.
Is a credit union a chartered bank?
No, credit unions are member owned and licensed under separate legislation, with their own insurance scheme and supervisor.
How can a customer check whether a provider is chartered?
The relevant banking regulator publishes a searchable register of licensed institutions, and the provider's own terms should name the bank actually holding the money.
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