If You Already Have Savings
Your head start deserves to be counted
People routinely run this calculator with a starting balance of zero even though they have a 401(k) from a previous job and an IRA they opened years ago. That omission makes the required contribution look far worse than it is.
Gather everything first
Count every retirement account, including old employer plans you have not looked at in years. Those balances have been growing without your attention.
Add taxable brokerage accounts and any invested cash beyond your emergency fund. Anything that is genuinely earmarked for the long term belongs in the total.
Leave out your emergency fund, your checking buffer, and money reserved for near-term goals. Those are not part of the million-dollar engine and counting them creates a false picture.
What an existing balance is worth
A $60,000 balance left alone at 7% becomes roughly $228,000 in twenty years without another dollar from you. That is nearly a quarter of the target already handled.
Because of that, entering your real starting balance often reduces the required monthly contribution by a meaningful amount. The plan gets easier the moment you stop ignoring what you have.
Run it both ways once, with zero and with your real balance, purely to see how much credit you were denying yourself.
- Include old 401(k) accounts from previous employers.
- Include IRAs, taxable brokerage balances, and vested employer contributions.
- Exclude your emergency fund and short-term savings.
- $60,000 at 7% becomes roughly $228,000 in twenty years on its own.
- Consolidating old accounts makes tracking much easier.
Track down the accounts you forgot
Old employer plans are the most commonly misplaced. Check statements, old email, and the plan administrators you remember using.
Rolling an old 401(k) into an IRA is a common cleanup step. It usually widens your investment options and lowers fees, though it is worth checking your current plan's costs before moving anything.
Consolidating also makes the annual review realistic. Five scattered accounts rarely get reviewed; one or two do.
Decide what to do with an old employer plan
You generally have a few options: leave it where it is, roll it into your current employer's plan, or roll it into an IRA. Cashing it out is the one choice that is almost always a mistake.
Leaving it alone is fine if the plan has good low-cost funds, and some large employer plans have institutional pricing you cannot get elsewhere. Check the expense ratios before assuming a rollover improves things.
Rolling into an IRA usually gives you the widest fund selection and makes consolidation easier. It can complicate certain tax strategies later, which is worth a conversation if your situation is complex.
Whatever you choose, do it deliberately rather than by default. Accounts left unattended for years are the ones most likely to be sitting in cash or in an expensive fund nobody selected on purpose.
Check what the money is actually in
An old account might be sitting in a money market fund or a stable value fund, earning far less than you assumed when you modeled 7%.
This happens frequently after a rollover, when the cash lands in the account but never gets invested. Years can pass before anyone notices.
Log in and confirm the holdings match the return you are planning with. A balance invested in cash while you model stock returns is a planning error that compounds silently.
Try these inputs
- Ignoring what you have: $1,000,000 from $0 at $800/mo, 7%
- Counting it properly: $1,000,000 from $60,000 at $800/mo, 7%
- With a larger head start: $1,000,000 from $150,000 at $800/mo, 7%