For many retirees, prudent withdrawals from a wisely invested portfolio combined with Social Security benefits can provide a consistent income to support their spending needs. But what if you had $850,000 in an IRA and $2,800 in monthly Social Security benefits: would that be enough to retire at 65?

To answer this question, you’d have to closely examine your income plan and expenses in retirement. You could use some shorthand methods to estimate your income and post-retirement expenses, but a better way is to create a detailed budget and income projection. Only then can you confidently decide whether you can retire at 65.

Calculating Your Income

A man check his IRA balance on a laptop in his kitchen.

A $2,800 monthly Social Security benefit is a solid financial foundation to fund your retirement. This benefit is as reliable as anything in the financial universe and adjusts annually to keep pace with inflation.

After that, things become less certain because the amount of income you can expect your IRA to generate each year depends on a number of assumptions. One popular approach assumes you can safely withdraw 4% from a balanced portfolio (50% stock, 50% bonds) in your first year of retirement – adjusting subsequent withdrawals for inflation – and reasonably expect your money to last 30 years or more. That suggests you can take $34,000 from your IRA in your first year. If inflation that year comes to 2%, the next year you would withdraw $34,680 and so on.

A more detailed look at income possibilities might consider how much you could earn from various assets. You could keep it in cash, which might earn 5% or $42,500 per year at current rates for certificates of deposit. That’s without touching the principal. Rates fluctuate, however, so you might opt for long-term fixed-income securities, instead. Ten-year U.S. Treasury Notes currently pay interest semi-annually at 4% per year, which would generate the same $36,400 in annual income that the 4% withdrawal rate would – again without touching the principal.

Stocks offer another option. The S&P 500 Index has historically returned nearly 10% a year. You can’t expect your $850,000 IRA to reliably yield $85,000 each year, however. That’s due to the effect of fees, volatility and other influences that tend to lower actual long-term returns below the average. However, investing a majority of your portfolio in stocks could allow you to withdraw more than the 4% per year.

Annuities could also help you out. These are contracts with insurance companies that guarantee you a set monthly payment for as long as you live in exchange for, usually, a single lump-sum payment. Annuities are complex, come in many varieties and typically have high fees, but they are reliable. For example, a fixed income annuity from New York Life currently pays nearly 7%.

These income options could potentially produce between $34,000 and $85,000 a year in addition to the $33,600 that you’d collect from Social Security. All in, your income could potentially range from approximately $68,000 to $119,000, although the top end is reliant on your portfolio generating an average annual return of 10%, which may not be realistic going forward.