For a large sum of money, the "best" bank depends on your priorities, such as maximizing interest, ensuring security, or accessing personalized wealth management services.
9 of The Best Banks For High Net Worth Individuals
Fixed rate savings accounts are an option if you are looking to save a lump sum of money that you will not need to access for a fixed period of time.
Getting a guaranteed 7% interest rate on savings in Australia is very difficult right now, with top savings accounts typically offering up to around 5% with bonus conditions (like Rabobank, ING, Bank Australia), while 7% rates are usually found in higher-risk investments like stocks or property, or as limited-time promotional regular savings accounts in the UK (not Australia), so you'll need to research bonus savings accounts, term deposits, investment options, or potentially P2P lending for higher returns, keeping risk in mind.
Interest on $100,000 in savings varies widely, from a few dollars in a basic account to $4,000+ annually in a high-yield savings (HYS) or up to $7,000+ with higher-rate options like some fixed deposits or special accounts, depending on the Annual Percentage Yield (APY) and account type (e.g., 4.2% APY yields $4,200/yr vs. 0.01% yielding $10/yr), with rates often ranging from 0.01% to over 4-5% for competitive offers, sometimes reaching 7%+ with specific conditions or promotions.
Finding a standard savings account with a consistent 7% interest rate is rare in early 2026; however, banks like First Direct and Co-operative Bank (in the UK) offer 7% or higher on regular saver accounts, often tied to specific conditions like monthly deposits and limited withdrawal periods, while U.S. high-yield online banks offer around 4-4.35%, not 7%. For 7%+, you'll typically look at niche products, crypto, or international options, which often come with higher risk or complex conditions, not standard savings.
If you only have $100,000, it is not likely you will be able to live off interest by itself. Even with a well-diversified portfolio and minimal living expenses, this amount is not high enough to provide for most people.
No single bank always offers the highest rate, as top rates (often 4.75% to 5.1%+) are usually introductory and require meeting bonus conditions, like regular deposits or balance growth, with Ubank, Rabobank, ING, and Bankwest frequently offering top bonus rates in Australia, while banks like Macquarie or Heartland offer strong base rates. You need to compare providers like Ubank, Rabobank, and ING for introductory offers and check Macquarie or AMP for better base rates, keeping conditions like deposit minimums and balance caps in mind.
It's not fully safe to keep $500,000 in one bank because standard government deposit insurance (like the FDIC in the U.S. or FCS in Australia) typically covers only up to $250,000 per depositor, per institution, per ownership category; the excess over $250,000 is unprotected if the bank fails, so you should spread your funds across different banks or use different ownership structures (like joint or business accounts) to ensure full coverage, or explore cash management accounts.
If you're looking for long-term growth, investing in index funds or ETFs can provide broad market exposure with lower fees. If you prefer stability, fixed-income investments like bonds or high-yield savings accounts may be more suitable.
Making the Most of Your Lump Sum Payment
The majority of banks don't limit how much cash you can deposit, but all institutions have to report deposits of $10,000 or more to the federal government.
Morgan Stanley, which has a $2.3-trillion wealth management unit, has tripled its loans to high-net-worth individuals in the last five years. Musk has also been a client of Morgan Stanley's investment bank, hiring it and Goldman Sachs Group Inc.
Data from the Employee Benefit Research Institute indicates that 22.1% of Americans have at least $100,000 saved up. Most people in this group have retirement savings that range from $100,000 - $499,000. Out of everyone in the study, 13.9% of Americans have savings in that range.
Finding a standard bank account with a 9.5% interest rate is highly unlikely in early 2026, as typical high-yield savings rates are around 4-5% (e.g., CommBank's 4.25% bonus, Bankrate's top online rates around 4.20%), while some specialized loans (like IDFC FIRST Bank education loans) or introductory fixed deposits (like G&C Mutual Bank's rates in Australia) might offer close to or above 4-5%, but 9.5% is usually for specific, limited-term promotions, specific loan types, or in different markets, not general savings.
Turning $10k into $100k in one year requires very high-risk, high-reward strategies like aggressive stock/crypto trading, flipping digital assets (websites/e-commerce), or launching successful online businesses (courses, dropshipping), as traditional investing yields far less; you'll likely need a combination of significant capital investment, rapid skill acquisition, strong market timing, and exceptional execution, accepting the high chance of significant loss.
The 7-3-2 rule is a wealth-building strategy highlighting compounding's power, suggesting it takes roughly 7 years to save your first significant amount (like a crore), then 3 years for the second, and only 2 years for the third, by increasing contributions and leveraging exponential growth as your money compounds faster. It emphasizes discipline in the initial phase, then accelerating savings as returns kick in, making later wealth accumulation quicker and more dramatic.
Interest on $100,000 in savings varies widely, from a few dollars in a basic account to $4,000+ annually in a high-yield savings (HYS) or up to $7,000+ with higher-rate options like some fixed deposits or special accounts, depending on the Annual Percentage Yield (APY) and account type (e.g., 4.2% APY yields $4,200/yr vs. 0.01% yielding $10/yr), with rates often ranging from 0.01% to over 4-5% for competitive offers, sometimes reaching 7%+ with specific conditions or promotions.
National Australia Bank (NAB) has ranked first as the safest bank in Australasia and number 16 in the world, the Rankings of the World's 50 Safest Banks report from Global Finance has found.
If you wanted to earn an average $3,000 per month, you would need to invest $1.6 million ($36,000 divided by 2.2%). While there is nothing wrong with passive investing, most investors are likely to do much better if they build their own investment portfolio.
There are two approaches you could take. The first is increasing the amount you invest monthly. Bumping up your monthly contributions to $200 would put you over the $1 million mark. The other option would be to try to exceed a 7% annual return with your investments.