Your money doesn't sit in a vault.
It works.

Banks lend your money out and keep most of the returns. Nammu does it differently.

How It Works

From your bank to the rainforest, in six steps.

💵

You add funds from your bank

Link your bank account and transfer any amount starting at $10. Your money appears in your Nammu account within minutes. No monthly fees.

Your funds are held as digital dollars, a regulated stablecoin whose reserves include cash and US Treasury bonds, verified monthly by Deloitte.
🔄

Your funds earn rewards through lending

Your money enters a secure lending market. Same principle as banks, except you keep more of the rewards. Borrowers put up more than they borrow as security. If they can't repay, their security is automatically sold to protect your funds.

This lending market manages over $3.7B in funds and has been independently reviewed 25 times. Full audit list
📈

Your balance earns rewards daily

Rewards accrue daily based on borrower demand. No action needed from you. Rates are typically higher than banks because there's no headquarters, branch network, or executive bonus pool taking a cut.

Reward rates are variable and depend on market conditions. We show you the current rate in real-time. No teaser rates, no bait-and-switch.
🌿

Keep what you want. Give what you choose.

Use the slider to decide how much of your rewards you keep and how much goes to rainforest conservation. Want to keep everything? That's fine. Want to send it all to the Amazon? Also fine.

You can change your split anytime.
🔍

Every donation is traceable

When your rewards are donated, the transaction is recorded on a public ledger that anyone can verify. You'll see exactly when your money was sent, how much, and to which conservation partner.

Our partners hold 100/100 on Charity Navigator. Up to 92% of every dollar goes directly to conservation programs.
🏦

Your money. Your timeline.

Request a withdrawal to your bank account whenever you want. No lockups, no penalties, no waiting periods.

We process withdrawals within minutes on our end. Bank arrival typically takes 1-2 business days. Subject to lending market liquidity.
The Honest Answer

"Okay, but where does the money actually come from?"

Your bank pays you under 0.4% on what you keep there (FDIC, March 2026). Meanwhile, they lend your money out to homebuyers, businesses, and credit card holders, earning 5-7% on those loans.

The difference between what they earn and what they pay you? That's their profit.

Nammu works on the same principle, just without the bank in the middle. Your funds go into a secure lending market where borrowers pay for access to capital. Because there's no bank taking the spread, more of the rewards go back to you.

That's it. No exotic strategies. Just lending, with better economics.

On a $5,000 balance · 1 year
Your bank pays you ~$20
Your bank earns from lending it ~$300
The bank keeps ~$280
Nammu pays you Up to $400
Security & Trust

What protects your money

There is real risk involved. Here's what stands between your money and a bad day.

$3.7B+
Total funds managed
in the lending market
Live data
25
Independent security
reviews completed
Audit list
Monthly
Reserve verification
by Deloitte & Touche
View reports

The digital dollars backing your funds are also trusted by Visa, Stripe, and PayPal.

What Nammu is NOT

  • Nammu is not a bank. We're a technology platform.
  • Your funds are not FDIC insured or government-guaranteed.
  • Reward rates are variable and not guaranteed.
  • Like any financial product, there is risk involved, including potential loss of principal.

We believe transparency about risk is more protective than false assurances of safety.

Infrastructure

Where your funds are deployed

Nammu allocates your funds across independently audited lending markets, selected for their security track record and liquidity depth.

Active
Up to 8%

Secure Lending Market I

Over-secured lending market where borrowers must put up more than they borrow. Strict collateral thresholds with automatic liquidation.

$3.7B+ Funds managed
25 Audits
2022 Launched
Coming Soon
TBA

Secure Lending Market II

A second independently audited lending market providing diversified reward sources and additional liquidity options.

Details soon

As we add new lending markets, your funds may be allocated across multiple vaults to optimize rewards and reduce concentration risk. You'll always see exactly where your funds are deployed.

Impact

Real forests. Real receipts.

Every donation is recorded on a public ledger with a unique transaction ID you can verify yourself.

Our primary partner spends 92.22% of funds directly on conservation programs. Source

100/100

Rainforest Trust

60M+ acres protected across 67 countries · 92% of funds to programs

100/100

Rainforest Foundation US

43M acres of Indigenous land secured · Satellite & drone monitoring

Advocacy

Amazon Watch

6M hectares defended · 26 extraction projects stopped · Indigenous rights

FAQ

Questions we'd ask if we were you

How is this different from a high-yield savings account?
A traditional HYSA is offered by an FDIC-insured bank. Nammu is not a bank and your funds are not FDIC insured. Nammu's lending market typically offers higher reward rates because there's no bank intermediary taking a cut. The trade-off: higher potential rewards, but without government-backed insurance.
What's the minimum to get started?
$10.
How quickly can I withdraw?
Withdrawals are processed on our end within minutes. How quickly the funds appear in your bank account depends on your bank, typically 1-2 business days. No penalties, no lockups.
Do I have to donate to conservation?
No. You can set your donation split to 0% and keep all your rewards. The conservation feature is entirely optional.
Why are the rates higher than my bank?
Banks earn significant returns lending your money out but pass very little back to you (the FDIC national average is under 0.4%). Nammu's lending market eliminates the middleman, so more of the rewards flow back to you.
What happens if a borrower can't repay?
Borrowers must put up more than they borrow as security. If the value drops below a safe threshold, it's automatically sold to repay the loan. This process is handled by automated rules that execute instantly. No human delay or judgment calls.
Can I lose money?
Yes. While the lending market has strong protections (over-secured loans, automated liquidation, 25 security audits), no financial product is risk-free. There have been past security incidents in the broader ecosystem — including a 2024 oracle misconfiguration and a 2025 frontend vulnerability, both resolved with no permanent loss of user funds. Potential risks include vulnerabilities in the lending infrastructure, temporary instability of the digital dollars, and general market conditions. Never add money you can't afford to lose.
How do I verify my conservation donations?
Every donation generates a unique transaction ID recorded on a public ledger. You can look it up anytime to confirm the amount, recipient, and timestamp. We'll show you how in the app.
Is Nammu a bank?
No. Nammu is a technology platform, not a bank. Your funds are not FDIC insured or government-guaranteed. We provide access to a secure lending market and conservation donation tools.
How does Nammu make money?
Nammu takes a small percentage of the rewards generated by the lending market. Our fee is transparent and visible in your account at all times.
Under the hood: technical details

Digital dollars

Your funds are held as USDC, a regulated digital dollar issued by Circle. USDC is backed 1:1 by cash and short-term US Treasury bills, with reserves attested monthly by Deloitte. USDC has over $60 billion in circulation and is trusted by Visa, Stripe, and PayPal. Because USDC moves over digital payment networks, transactions settle in seconds instead of days, which is what allows us to cut out the overhead and pass more rewards back to you.

Lending market

Funds earn rewards through Morpho Protocol, an over-collateralized lending market operating on the Base network (built by Coinbase). Morpho has undergone 25 security audits by firms including Spearbit, Trail of Bits, and Cantina. The protocol manages over $3.7 billion in total funds.

Conservation donations

Donations are routed through Endaoment, a 501(c)(3) nonprofit that processes charitable giving via smart contracts on the Base network. Every donation is recorded on-chain with a verifiable transaction hash. Endaoment's maximum fee is 1.5%.

Important disclosure: Nammu is a technology platform, not a bank. Your funds are not bank deposits and are not insured by the FDIC or any government agency. Rewards are variable, not guaranteed, and you may lose some or all of your funds. USDC is a digital stablecoin, not US dollars held in a bank. Past reward rates are not indicative of future rates. Nammu is not a registered investment adviser or broker-dealer.

Still have questions?

We'd rather answer a hundred questions than have one person feel unsure.
Reach out at [email protected]. A human will reply.

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