High-yield savings accounts pay 8-40x more interest than traditional bank savings as of September 2026 — but do they require large deposits to get started? Here’s every minimum requirement you need to know. Note: Discover Bank is no longer accepting new savings account applications — it merged into Capital One, N.A. on May 18, 2025, and is excluded from the tables below. See the Capital One 360 Performance Savings review for details on existing accounts.
Savings Account Minimum Deposits by Bank (September 2026)
Current APYs for these accounts are compared in the best savings accounts; this table covers what it takes to open and keep each one.
| Bank | Minimum to open | Minimum for the top rate | Monthly fee |
|---|---|---|---|
| Ally Bank Online Savings | $0 | $0 | $0 |
| Capital One 360 Performance Savings | $0 | $0 | $0 |
| Marcus by Goldman Sachs Online Savings | $0 | $0 | $0 |
| SoFi Checking and Savings | $0 | Direct deposit or qualifying deposits (not a balance) | $0 |
| UFB Direct Portfolio Savings | $0 | $0 | $0 |
| Barclays Tiered Savings | $0 | $250,000 for the top tier | $0 |
| Betterment Cash Reserve | $10 | $10 | $0 |
| Bread Savings | $100 | $100 | $0 |
| CIT Bank Platinum Savings | $100 | $5,000 (0.25% APY below that) | $0 |
Checked September 29, 2026 against each bank’s site (Marcus and SoFi via secondary sources, as their sites block automated checks). Terms can change; confirm before opening.
Flat Rate vs. Tiered Rate: Why It Matters
Flat-Rate Banks (Same APY on Every Dollar)
| Balance | Ally (3.10% flat, Sept. 29, 2026) | Annual Interest |
|---|---|---|
| $100 | 3.10% | $3.10 |
| $1,000 | 3.10% | $31 |
| $10,000 | 3.10% | $310 |
| $50,000 | 3.10% | $1,550 |
| $100,000 | 3.10% | $3,100 |
Tiered-Rate Banks (Different APY by Balance)
Some banks advertise a high top-tier APY but pay much less below a threshold. Illustrative example using rates in the current 2.50%-4.10% range:
| Balance | Illustrative Tiered Bank | Blended (Effective) APY |
|---|---|---|
| $10,000 | 2.50% under $5K, 3.25% $5K-$25K | 2.87% (blended on $10K) |
| $50,000 | adds 3.75% tier $25K-$100K | 3.42% (blended on $50K) |
| $100,000 | adds 4.10% tier above $100K | 3.59% (blended on $100K) |
The takeaway: A flat-rate bank at 3.10% can outperform a tiered bank advertising “up to 4.10%” if most of your balance falls in lower tiers. CIT Bank’s own Platinum Savings is the clearest real-world example: it pays 0.25% below $5,000 and 3.75% only at $5,000 and above.
How to Spot Tiered Rates
Look for these phrases in account disclosures:
- “Up to X% APY” — almost always tiered
- “Earn X% on balances above $5,000/$25,000” — tiered
- “Blended rate” or “rate tiers” — tiered
Banks that advertise a single APY without “up to” (Ally, Bread, Marcus, Synchrony) typically offer flat rates.
Hidden Minimums and Conditions
Direct Deposit Requirements
Some banks pay a higher APY only with qualifying direct deposits:
| Bank | Without DD | With DD (confirm current terms) | DD Requirement |
|---|---|---|---|
| SoFi | Much lower (see SoFi’s rate sheet) | 3.30%; new members up to 4.20% for up to 6 months | Eligible direct deposit or qualifying deposits |
Balance Caps
Some accounts limit how much can earn the top rate:
| Bank | Top Rate | Applies To |
|---|---|---|
| CIT Bank Platinum Savings | 3.75% | Balances of $5,000+ only; 0.25% below |
For most other mainstream high-yield savings accounts on this list (Ally, Marcus, Capital One 360, Synchrony, Bread), there are no caps — you earn the same rate on your entire balance.
How Minimums Compare to Traditional Banks
| Feature | Big Bank Savings | High-Yield Savings |
|---|---|---|
| APY | 0.01-0.10% (FDIC national average for all savings: 0.37%) | About 3.10-4.00% |
| Minimum balance | $300-$500 | $0 (mostly) |
| Monthly fee | $4-$8 (below minimum) | $0 |
| Fee if balance drops | Yes | No |
| Minimum to open | $25-$100 | $0-$100 |
| Interest on first dollar | Yes (0.01%) | Yes (3%+) |
Cost of Big Bank Savings Minimums
If you keep $500 in a big bank savings account to avoid the fee:
| Scenario | Big Bank ($500, 0.01%) | HYSA ($500, 3.10%) |
|---|---|---|
| Interest earned | $0.05/year | $15.50/year |
| Risk of monthly fee | $5-$8 if balance dips | $0 |
| 5-year earnings (approx., rate unchanged) | ~$0.25 | ~$82 |
If the big bank savings balance dips below the minimum for even 3 months, you lose $12-$24 in fees — wiping out years of big bank interest earnings in one bad quarter.
Best HYSA for Different Starting Amounts
Starting with $0-$500
| Recommended | Why |
|---|---|
| Ally Bank | No minimum, immediate interest from $0.01, savings buckets to organize goals |
| Capital One 360 | No minimum, branches available if you need help opening |
| SoFi | No minimum, rate boost with any qualifying direct deposit |
Starting with $500-$5,000
| Recommended | Why |
|---|---|
| Marcus | Clean interface, no minimum, consistently competitive rate |
| Synchrony | $0 minimum, ATM fee refunds |
| Bread Savings | Highest flat, non-promotional rate as of Sept 2026 |
Starting with $5,000-$25,000
| Recommended | Why |
|---|---|
| CIT Bank Platinum Savings | Clears the $5,000 threshold for the top advertised rate |
| Bread Savings or Ally | Simple flat-rate alternatives with no tier to manage |
| Capital One 360 | Full ecosystem with checking integration |
Starting with $25,000+
| Recommended | Why |
|---|---|
| Multiple banks | Spread across 2+ banks for FDIC coverage planning above $250,000 |
| Wealthfront Cash or Betterment Cash Reserve | Extended FDIC coverage into the millions via partner-bank networks |
| Treasury bills | Consider mixing HYSA with T-bills for state tax benefits |
Opening Requirements Beyond the Minimum
| Requirement | What You Need |
|---|---|
| Social Security number | Required (or ITIN) |
| US address | Required |
| Government ID | Driver’s license, state ID, or passport |
| Existing bank account | Needed to fund via ACH transfer |
| Age | 18+ (some allow minors with parent) |
| Credit check | Generally not required for savings accounts |
| ChexSystems check | Rarely checked for savings-only accounts |
The Bottom Line
| Starting Amount | Best HYSA | APY (confirm current) | Min. to Open |
|---|---|---|---|
| $0 | Ally Bank | 3.10% | $0 |
| $0 (want branches) | Capital One 360 | 3.10% | $0 |
| $100 | Bread Savings | 4.00% | $100 |
| $5,000+ | CIT Bank Platinum Savings | 3.75% | $100 to open, $5,000 for top rate |
| Any (want checking too) | SoFi | 3.30% with direct deposit | $0 |
Most high-yield savings accounts have no minimum balance requirements, no minimum deposits, and no monthly fees. The question isn’t whether you can afford to open one — it’s whether you can afford not to, given that the same $10,000 earns about $1/year at a big bank or roughly $310-$400/year at a high-yield savings account (3.10%-4.00% APY, September 2026).
Related Articles
- High-Yield Savings Accounts
- Minimum Balance Requirements by Bank
- No-Minimum-Balance Savings Accounts
- High-Yield Savings vs CD
- Best Savings Accounts
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