Saving for retirement gets most of the attention. But here is the question that actually determines whether your retirement works: will your income last as long as you do?
A retirement income gap worksheet helps you answer that question before the paychecks stop — not after.
What Is a Retirement Income Gap?
Your retirement income gap is the difference between what you have coming in every month and what you actually need to spend. Most retirees are surprised by how wide that gap can be, especially once they factor in the costs that are easy to underestimate:
- Healthcare. Medicare covers a significant portion of medical costs, but it does not cover everything. Medigap or Medicare Advantage premiums, out-of-pocket prescriptions, dental, vision, and hearing costs add up. The average retired couple may spend tens of thousands of dollars on healthcare over a 20-year retirement.
- Longevity risk. If you retire at 65, there is a real chance you will live into your late 80s or 90s. That is 25 to 30 years your income needs to cover — and inflation keeps pushing costs higher throughout that period.
- Housing and lifestyle. Mortgage payments may continue. Property taxes, home maintenance, travel, and the activities that give retirement its meaning all require steady income.
A retirement income gap worksheet puts all of these expenses on one page next to your income sources so you can see exactly where the shortfall is — before it becomes a crisis.
How the Worksheet Works
The worksheet is simple, but the picture it paints is powerful. Here is what goes on each side:
Income Sources (What You Have Coming In)
- Social Security benefits (use your actual projected benefit from SSA.gov, not an estimate)
- Pension income (if applicable)
- Retirement account withdrawals (401(k), IRA, Roth IRA)
- Annuity payments (if you have purchased an annuity)
- Part-time work or consulting income (if you plan to keep working)
Expense Estimates (What You Need to Cover)
- Monthly housing costs (mortgage or rent, property tax, insurance, maintenance)
- Healthcare premiums and out-of-pocket costs
- Food, utilities, transportation
- Debt payments (if any remain)
- Travel, entertainment, and personal spending
- Emergency reserve (unexpected repairs, medical bills, family needs)
When you subtract the income column from the expense column, you get your gap — or your surplus. If there is a gap, the worksheet tells you exactly how much you need to close.
The Three-Bucket Approach to Closing the Gap
Once your worksheet reveals the gap, a common framework for closing it uses three “buckets” of money:
- Safety bucket. Cash and short-term savings — enough to cover 6 to 12 months of expenses plus any near-term large costs. This bucket keeps you from being forced to sell investments at the wrong time.
- Income bucket. Investments and products designed to generate steady monthly income. This might include bonds, dividend-paying stocks, fixed annuities, or income-producing real estate. The goal is predictable cash flow that covers your essential expenses.
- Growth bucket. A longer-term investment portfolio designed to grow enough to offset inflation over a 20- or 30-year retirement. This is where you maintain purchasing power so your income still covers costs in year 20, not just year one.
The worksheet helps you determine how much money each bucket needs — and whether your current savings and income sources can fill them.
What the Worksheet Reveals About Social Security Timing
One of the most common gaps the worksheet identifies is the difference between claiming Social Security early versus waiting. Claiming at 62 gives you benefits sooner, but the monthly amount is significantly lower than waiting until full retirement age or 70. For every year you delay past full retirement age, your benefit grows by about 8 percent until age 70.
A retirement income gap worksheet makes the impact of that decision concrete. You can see, in dollar amounts, how your gap changes depending on when you claim — and whether the lower early benefit creates a shortfall that your other income sources cannot fill.
What the Worksheet Reveals About Healthcare Costs
Healthcare is often the largest variable in the retirement income gap. A worksheet forces you to estimate:
- Medicare Part B and Part D premiums
- Medigap or Medicare Advantage plan costs
- Prescription drug expenses (especially if you take brand-name medications)
- Dental, vision, and hearing costs (Medicare does not cover these comprehensively)
- Potential long-term care needs
These are not hypothetical numbers — they are real costs that vary widely based on your health, your location, and the plans available to you. A Trek Insurance Solutions advisor can help you research the actual costs for plans available in your area so your worksheet reflects real numbers, not guesses.
How to Use Your Worksheet Results
Once you have the numbers:
- If there is no gap: You are in strong shape. The next step is making sure your plan is resilient — that a market downturn, a health event, or a longer-than-expected retirement does not create one later. Consider how your 401(k) or IRA fits into your broader retirement roadmap as you evaluate whether your accounts are positioned to support you for decades.
- If there is a gap: That is exactly what the worksheet is designed to show. Knowing the number means you can address it now, while you still have time and options — whether that means adjusting your savings rate, delaying retirement by a year or two, optimizing your Social Security timing, or restructuring your income sources. Our guide on building a retirement income plan walks through the next steps once you have identified where your gap is.
The worst outcome is discovering a gap after retirement, when your options are much more limited.
Start With the Worksheet, End With a Plan
A retirement income gap worksheet is not the end of your planning — it is the beginning. It gives you the honest picture you need to make smart decisions about when to retire, how to claim Social Security, what healthcare coverage to choose, and how to structure your income for the long haul.
Trek Insurance Solutions helps people map out their retirement income every day. We can walk you through the worksheet, research the actual costs of plans available in your area, and help you build a retirement income plan that holds up for decades.
For more information, visit us at trekis.net or call 888-960-0442.