Eric Browneric.base.eth
Documentation

Financial Guide

Your Bank Is Obsolete

Staying on the old financial system could cost you six-figures throughout your career. Find out how much you're losing.

2 min read

Using old banks, traditional credit cards, and manual investing is costing you.

Coinbase is now a full wealth management platform with yield-bearing accounts, credit cards, collateralized lending, and automated investing.

FeatureTraditionalCoinbase
Savings yield0.01%3.5-7%
Rewards4% points (depreciating)2-4% BTC (appreciating)
Accessing liquiditySell and pay taxesBorrow with no tax event
Investment captureManual (86% effective)Automated (100%)

Try it yourself: Input your numbers below to see the impact on your 30-40 year wealth trajectory.

Wealth Calculator

Annual Income (post-tax)
$30K$500K
Credit Card Spend
$500/mo$10K/mo
Savings Rate
1.0%25.0%
Investment Rate
1.0%30.0%
Wealth projection over 40 years
At 30 years
Traditional
$370K
Conservative
$499K
Aggressive
$997K
Your advantage:+$627K (169%)
At 40 years
Traditional
$712K
Conservative
$992K
Aggressive
$2.58M
Your advantage:+$1.87M (263%)

At a 5.0% savings rate on $60K income, platform choice creates a $1.87M difference over 40 years.

That's 37.4 additional years of living expenses at $50K/year.

Assumptions: Savings yield 0.5% (bank) / 3.5% (Coinbase) / 7.05% (Morpho). Investment returns 7% (stocks/conservative BTC) / 10% (aggressive BTC). BTC rewards grow at investment rate. Past performance does not guarantee future results.

How it works

Traditional finance extracts value through structural inefficiencies:

  • Near-zero yields: Your money sits idle earning 0.01% while the bank lends it at 6-20%.
  • Manual investing: Research shows 13.6% effectiveness loss from behavioral friction1.
  • Depreciating rewards: Credit card points locked in closed ecosystems with gotchas and expiration.
  • Tax on liquidity: Accessing your assets triggers capital gains events.

These small frictions create six-figure gaps over a 30-40 year career. Let's look at each more closely.

Savings Yield

When you hold USDC in Coinbase:

  1. You capture the value: Instead of your bank lending your deposits at 6% and giving you 0.01%, you receive 3.5-7% directly
    • Stablecoins are backed by treasury bills which pay interest. That interest is passed along to Coinbase One users (currently ~3.5%)
    • Onchain lending services pay interest to users who deposit stablecoins to be lent out to borrowers (this rate is more dynamic than treasury rates, but can be as high as ~7%)
  2. Your funds stay liquid: Unlike traditional banks which require lockups and CDs to provide yield better than 0.01%, onchain yield has no lockups nor penalties for withdrawals

$10,000 Compounded Over 30 Years

Deposit type:

Shows growth of a one-time $10,000 deposit with no additional contributions.

Traditional Bank(0.01% APY)
$10,030
USDC Rewards(3.50% APY)
$28,068
Morpho DeFi(7.05% APY)
$77,197
Initial $10K
Difference: +$67,167

Credit Card Rewards

With traditional cards you earn points that are locked in a single ecosystem. These programs are intentionally designed with friction to limit your earnings. Even worse, points may expire and are backed solely by the issuer's solvency.

The Coinbase Card pays 2-4% back in Bitcoin.

  1. That BTC is instantly liquid and you can do anything you want with it
  2. That BTC can grow in value
  3. Daily purchases act as dollar-cost averaging to grow your investments
  4. It requires no behavioral change. You're not "investing." You're just using a credit card.
  5. Research shows that auto-investing triggers financial education amplified by practical experience2

Rewards Over Time: Points vs. Bitcoin

Assumptions
Monthly spend
$1,500
Traditional rewards
4% (−2%/yr decay)
BTC rewards
2%
BTC appreciation
5%/yr
BTC reward rate:
Traditional Points4% earn, −2%/yr decay
0yr
$720
5yr
$4110
10yr
$7174
15yr
$9943
20yr
$12447
25yr
$14710
30yr
$16755
BTC Rewards2% earn, +5%/yr growth
0yr
$360
5yr
$2449
10yr
$5114
15yr
$8517
20yr
$12859
25yr
$18401
30yr
$25474
30-year difference:+$8719

Traditional points lose purchasing power over time. BTC rewards can appreciate.

Investing Friction

Fragmented financial services make it challenging to auto allocate your funds to an ideal portfolio. Intending to save $500/month doesn't mean you will. Automated direct deposit removes decision fatigue and captures 100% of intended savings.

Research shows automated enrollment increased savings rates from 3.5% to 13.6% in controlled studies1.

Coinbase now lets you send your paycheck directly to your Coinbase account and automatically allocate it to your ideal portfolio of assets across crypto and stocks.

Manual vs. Automated Investing

Assumptions
Monthly investment
$500
Annual return
7%
Manual loss
13.6%/yr
Automated capture
100%
1yr
$5,184
$6,000
10yr
$71,624
$82,899
20yr
$212,521
$245,973
30yr
$489,685
$566,765
40yr
$1,034,908
$1,197,811
Manual (86.4%)
Automated (100%)
40-year difference: +$162,902 from eliminating behavioral friction

Cost of Accessing Liquidity

If you need more cash than you have in your account, you can either sell invested assets or borrow against them.

In traditional systems, borrowing against your assets is time intensive and uncertain, forcing the average consumer to sell invested assets. This triggers capital gains tax and lost opportunity for growth.

In the onchain system you can instantly borrow against your assets. This protects you from taxes and keeps you invested to realize potential upside.

Accessing Liquidity: Sell vs. Borrow

Scenario: Emergency repair
BTC held
$50,000
Cost basis
$20,000
Unrealized gain
$30,000 (150%)
Cash needed
$8,000
Liquidation Risk

At 16% LTV, BTC would need to drop ~80% (to $10K) before hitting the 80% liquidation threshold. Low LTV provides substantial buffer, but always have a repayment plan.

At 5% BTC appreciation: selling costs ~$1,100 to $1,400 (taxes + lost upside). Borrowing costs ~$400/yr in interest. Net savings: ~$700 to $1,000/year.

Risks

This isn't free money. It's worth calling out the risks involved:

  • BTC volatility: 5% appreciation assumptions are conservative but not guaranteed
  • Rate changes: Yields fluctuate with market conditions
  • Platform risk: Onchain lending services aren't FDIC insured
  • Liquidation: If the value of your collateral (BTC or ETH) falls significantly, it could be sold to cover the loan. Only borrow at conservative LTV (50% or lower) and have a repayment plan.

Bottom line

Approach30-Year Gain40-Year Gain
Conservative+$114K-241K+$218K-483K
Optimized+$453K-579K+$949K-1.37M

The difference between retiring at 67 and retiring at 60. The choice is yours.

Sources

  1. Thaler, R.H., & Benartzi, S. (2004). "Save More Tomorrow: Using Behavioral Economics to Increase Employee Saving." Journal of Political Economy, 112(S1), S164-S187.

  2. Future Market Insights (2024). "Micro-Investing Platform Market 2024 to 2034." Market analysis showing integration of educational resources in investing platforms helps users build financial confidence.

  3. U.S. Bureau of Economic Analysis. "Personal Saving Rate." Federal Reserve Economic Data (FRED).

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