People heading into retirement often have a number in their head. Something like $6,000 a month, or $7,000. It feels reasonable, usually based on a rough sense of what they spend minus the mortgage they just paid off, plus a little extra for travel.
That number is frequently off. Not because people are careless, but because they have never had to track spending with retirement precision. When you are working, a rough number is fine. You are adding to your accounts every month, and a small error does not move the needle much. In retirement, that same rough number becomes the foundation of everything. If it is off by $1,000 a month, your entire plan is built on a false floor. Getting accurate before you retire is the first step, and everything else in the planning process follows from it.
Why Spending Has to Come First
When someone asks how much they need to retire, the honest answer is that it depends on how much they are going to spend. That is not a deflection. It is the actual answer, and it means the spending number has to come before anything else—before Social Security timing, investment allocation, or any of the questions people usually come in wanting to discuss first.
The financial planning software we use is only as good as the numbers we put into it. Garbage in, garbage out. If the monthly spending figure is a guess, the plan it produces is a guess with better formatting. The goal is a number grounded in 12 months of real data.
Why the Number Is Often Further Off Than Expected
A couple came in not long ago and told me they could live on about $7,000 a month in retirement. That is roughly $84,000 a year, which sounded reasonable to them. When I pulled up their prior year tax return, it showed $185,000 in income.
I asked them where the other $100,000 went. Had they paid off debt? Done a major home project? Saved a large amount that year? They looked at each other and did not have an answer. They had to go home and figure it out.
This pattern comes up regularly. Spending happens in ways people do not always notice. Irregular expenses that do not show up in a monthly average, subscriptions running quietly in the background, costs that get categorized mentally as one-time items but recur every year. None of it shows up in an estimate, and all of it shows up in a tax return.
The comparison is worth making. Put your budget next to your tax return at the end of the year and see whether the numbers match. If they do not, finding the difference before you retire gives you time to adjust. Finding it after is a harder conversation.
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The 12-Month Method
Start tracking about a year before you plan to retire, and run it for the full 12 months. At the end of the year, take the total and divide by 12 to get your real average monthly number. This approach handles the irregular months that people often use as a reason not to track at all. Property taxes, quarterly insurance payments, and the months that run larger than others all average out across a full year.
From that number, subtract whatever you spend because of work: the commute, the lunches out, or the work wardrobe. Those expenses largely disappear when you retire, and the number that remains is a much closer approximation of what retirement actually costs you. That is what goes into the plan.
Tools That Help
Paper budgeting works in theory, but expenses can fall through the cracks. Linking a budgeting app directly to your checking account means every transaction is captured automatically without manual entry.
Two options worth knowing about are Dave Ramsey’s EveryDollar app, available at everydollar.com, which has a free version and links directly to your checking account, and YNAB (You Need a Budget), available at ynab.com. Both tools are built around giving every dollar a purpose before it gets spent, and both reduce the gaps that memory and paper tend to miss.
Retirement Is Too Important to Build on an Estimate
The clients who come in with 12 months of real spending data behind them tend to get a more accurate plan, because the inputs reflect their actual life rather than a number estimated during a busy week. If you are within a year or two of retirement and do not yet have a clear monthly spending figure, getting that number is one of the most useful things you can do right now, before any other planning conversation.
When you are ready to work through the full picture, we are glad to help.
Call 732-364-2045 or reach out to schedule a planning conversation
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This material is intended for informational/educational purposes only and should not be construed as investment/tax advice, a solicitation, or a recommendation to buy or sell any security or investment product. Please contact your financial professional for more information specific to your situation.
Safe Harbor Wealth Management does not provide legal or tax advice. You should consult a legal or tax professional regarding your individual situation.
