[toomuchtodo]

Sign up with a brokerage. Use their cash management account. Confirm its FDIC limits (many cover $1M+ with sweep functionality). If you exceed those limits, consider investing excess cash or cash equivalents in treasuries or money market funds that solely hold short dated government backed securities. This is what a Narrow Bank would do with demand deposits. Treasuries are backed by the Fed and the full faith and credit of the US gov; they are considered risk free.

Tada! You have replicated narrow bank functionality. None of us have enough pull to change Fed fractional reserve and banking regulatory policy unfortunately. If you can't change the wind, adjust your sails.

If you don't mind your deposits being exposed to fractional reserve lending and FDIC insurance, CDARS: https://www.intrafinetworkdeposits.com/ To my knowledge, it can provide at least $50M in FDIC coverage with sweeps under the hood, although someone on HN mentioned the other day the limit might be more. Ask your financial services institution what their limit is.

(not investing advice, educational purposes only)

[michaelt]

> Tada! You have replicated narrow bank functionality.

Brokerages will issue checks and debit cards now?

[bombcar]

Yup! Most just do it via a small internal FDIC bank (it's easier for them to have a bank for other reasons anyway):

https://www.tdameritrade.com/investment-products/cash-soluti...

https://www.fidelity.com/cash-management/atm-debit-card

Even vanguard can do it, but they don't LIKE to: https://investor.vanguard.com/investor-resources-education/f...

[prottog]

Many do, but even if they didn't, it's free to ACH money to your real bank checking account every now and then that you can spend and write checks with.

[toomuchtodo]

My brokerage issues checks, debit cards, and offers both inbound and outbound wires at no charge. Check with yours!

[HDThoreaun]

brokers lend cash sitting in accounts.

[toomuchtodo]

Brokers only lend out of specific core cash accounts (FCASH at Fidelity, for example). Whether you hold cash in those account types is your choice, it isn’t mandatory.

https://www.fidelity.com/mutual-funds/fidelity-funds/money-m...

[kccqzy]

Can they lend treasuries sitting in accounts, if you don't have a margin account?

[HDThoreaun]

No, but treasuries lose value if interest rates increase.

[kccqzy]

Then hold short term treasuries. Problem solved.