Between the end of residency and the first genuinely busy attending years, most physician households accumulate a pile of cash in checking. Nobody decides to do this; it just happens — $40,000, $60,000, sometimes six figures, earning a rate that rounds to zero.
At a large branch bank paying 0.05 percent, $60,000 earns about $30 a year. In a high-yield savings account paying around 4 percent — an ordinary online-bank rate as of 2026 — the same dollars earn about $2,400. Same money, same federal insurance, same one-afternoon effort. There is no other hour in personal finance that pays a physician this well, and it requires no market risk, no timing, and no expertise. It requires knowing that the menu exists.
The five parking spots
Every dollar of cash you hold lives in one of five places, each trading yield against access.
Checking is for money in motion — the account bills and mortgage payments flow through. It pays essentially nothing by design, and that is fine for its job. The problem is scope creep: checking should hold roughly one to two months of outflows, and everything beyond that buffer is a silent donation to the bank.
Big-bank savings is the default savings account attached to your checking. The national average savings rate has hovered near half a percent while short-term rates sit around eight times higher — branch banks pay the inertia rate because inertia works. There is no insurance or safety advantage over the alternatives. It is simply the same product at a worse price.
High-yield savings accounts (HYSAs) are savings accounts at online banks paying a rate near the Federal Reserve''s short-term rate — roughly 4 percent in 2026, floating up and down as the Fed moves. Same FDIC insurance as the marble-lobby bank, transfers back to checking in about a day. This is the default answer to "where should my cash be?" and the natural home of the emergency fund.
Certificates of deposit (CDs) lock your money for a fixed term — three months to five years — in exchange for a fixed rate. FDIC-insured, but withdrawing early typically costs several months of interest. CDs are for money with a known future date: next summer''s tax bill, a house down payment eighteen months out. They are the wrong home for an emergency fund, whose entire purpose is showing up unscheduled.
Treasury bills are short-term loans to the U.S. government, bought through any brokerage or TreasuryDirect, backed by its full faith and credit. Their quiet superpower for physicians: T-bill interest is exempt from state income tax. A California physician in a 9.3 percent state bracket holding $50,000 in T-bills at 4 percent keeps about $186 a year that the same yield in a savings account would surrender to Sacramento. In high-tax states, at larger balances, this compounds into real money.
The name collision that catches everyone
One pair of near-identical names hides a genuinely different product, and it is worth thirty seconds of your attention.
A money market account is a bank deposit — FDIC-insured, functionally a savings account with a different label.
A money market fund is a brokerage investment — a mutual fund holding very short-term government debt, engineered to hold a stable $1 share price. It is very low risk, and its yield is usually competitive with HYSAs. But it is not FDIC-insured. The SIPC coverage at your brokerage protects you if the brokerage itself fails; it does not insure the fund''s value. When your brokerage "sweeps" idle cash, it is usually into a money market fund. Know which one you own — in calm times the difference never matters, and the entire point of insurance is the uncalm times.
What FDIC insurance actually covers
Deposit insurance is the bright line between a bank account and an investment. The rule: $250,000 per depositor, per insured bank, per ownership category. If the bank fails, the FDIC makes you whole, typically within days — this has been the mechanism through every modern bank failure, and insured depositors have not lost a cent.
The per-depositor, per-bank, per-category structure means a physician couple has more headroom than the headline number suggests: your individual account, your spouse''s individual account, and a joint account are separate categories — $250,000 + $250,000 + $500,000 of coverage at a single bank. Credit unions carry identical coverage under the NCUA. Above those limits, spread across a second bank or hold T-bills, which carry the government''s direct backing without any cap.
How much cash — and the tiering
The standard prescription is an emergency fund of three to six months of essential expenses — the mortgage, insurance, food, childcare, minimum debt payments — not gross spending, and not income. A household with $9,000 a month of essentials needs $27,000 to $54,000. Where you land in that range tracks your fragility: two physician incomes with high job security sit near three months; a single income supporting a family, a new practice, or work argues for six or more.
Then tier it:
- Tier 1 — checking: one to two months of outflows. Friction-free bill flow; earns nothing; kept small on purpose.
- Tier 2 — the emergency fund: three to six months of essentials in an HYSA, earning market rate with FDIC insurance and next-day access.
- Tier 3 — known future expenses: dollars with a date (tax payment, down payment) in a CD or T-bill maturing near the date, locking today''s rate.
- Tier 4 — everything else: money beyond the tiers has a horizon of years, and cash is the wrong asset for it. At roughly 3 percent long-run inflation, a pile of cash quietly loses purchasing power every year it waits. Long-horizon dollars belong in investments.
The failure modes are symmetric, and both are common among physicians. Too little cash, and a job transition or disability gap forces you to sell investments at whatever price the market quotes that day. Too much cash — the $200,000 "safe" pile that never gets invested — and inflation converts prudence into a guaranteed real loss, a few invisible percent per year, for decades.
The one-afternoon fix
Open your banking app and find the actual APY on your savings — not what you assume, the printed number. If it starts with a zero, the fix takes one afternoon: open a high-yield savings account (confirm FDIC membership on the bank''s site — every legitimate one displays it), link your checking, move everything beyond your checking buffer, and set the emergency fund at three to six months of essentials. Rates float with the Fed, so do not chase the last tenth of a percent across banks; any competitive HYSA captures nearly all of the gap. At physician cash balances, that afternoon is worth one to two thousand dollars a year, every year, at zero risk — and it frees you to point your attention at the decisions that compound even harder.