idle
Demo — simulated ledger, live market rates

Your startup's idle cash, at live market rates

Idle cash is a silent expense: checking earns next to nothing while T-bills pay real yield. Idle is treasury automation for startups — T-bill ladders, maker-checker transfer controls, and a to-the-cent ledger, priced from live U.S. Treasury rates.

Forgone on an idle $2.5M this year$55,237.81…and counting, at 3.906% (13-week T-bills) vs 0.01% checking. Illustrative balance.
The Idle dashboard: total cash position, per-account balances, cash over time, and the live yield-lost counter

Enter a balance to see a year of forgone yield.

Live feed
SOFR3.64%as of 2026-07-27Fed funds (effective)3.63%as of 2026-07-2713-week bill (BEY)3.906%as of 2026-07-273-month bill3.82%as of 2026-07-276-month bill3.94%as of 2026-07-2730-year mortgage6.58%as of 2026-07-23
How it works

From idle cash to a settled ladder in three moves

01

See live rates

Open the demo to the real rate environment — SOFR, fed funds, and the latest bill auctions, fetched live.

02

Build a T-bill ladder

Size a ladder against a sample balance and watch the blended yield and maturity schedule update instantly.

03

Approve and settle

Propose a transfer, approve it as a second party, and watch it settle to the cent in the audited ledger.

What's inside

Treasury infrastructure, not a spreadsheet

T-bill ladders

Roll a laddered book of Treasury bills sized to your runway, so cash stays liquid as each rung matures.

Maker-checker controls

Every transfer is proposed by one person and approved by another — segregation of duties, enforced.

To-the-cent ledger

An append-only, audited ledger in exact integer cents. No floats, no drift, every entry accounted for.

Live market rates

Priced from live U.S. Treasury auctions and FRED policy rates — the same numbers scrolling above.

Try the live demo No sign-up — the demo opens on a sample company at live rates.