Your retirement plan should reflect how your expenses actually change.
Education costs, loan payments and commuting may disappear. Healthcare, travel or domestic help may rise. The Carrowmont Retirement Planner models those changes instead of blindly inflating today's total spending.
Understand the retirement assumptions before you model them.
Learn how spending, inflation, retirement income and time horizon shape the amount a portfolio may need to support.
Build the assumptions
Fast estimate: one retirement-spending percentage and one inflation rate are applied to your household total.
Your timeline
When do you plan to retire, and how long should the plan last?
Savings & returns
These assumptions affect what you may have at retirement and how long the portfolio can support withdrawals.
Quick retirement budget
Use this when you want a fast estimate without entering every expense.
See how your retirement evolves
Charts update automatically as you change the plan.
How the retirement target is built
Retirement expense breakdown
Household expense timeline
Today's spending through retirementFuture-money values: this chart shows projected nominal amounts in your selected currency at each future age. They should not be compared directly with today's money without considering inflation.
Retirement portfolio paths
See how the required corpus and your projected current-plan corpus may change after retirementHow to read this chart: the green line is your projected current-plan portfolio. The blue line is the modelled required-corpus path, including your selected safety buffer.
What the numbers are telling you
Illustrative observations from your current assumptions.
Compare retirement ages
Same assumptions, different retirement date.
Retirement target figures are shown in future money at each retirement age. A later retirement can therefore show a higher nominal corpus because of inflation, while still requiring a lower recurring retirement contribution because you have more years to save.
Retirement Planning Report
Prepared from the Carrowmont Retirement Planner
How the retirement target is built
Future money at retirement unless noted
Retirement funding
Future money at retirement unless noted
Monthly retirement contribution required by the model
This is an illustrative retirement contribution under the assumptions entered, not a recommendation or guarantee.
Where projected retirement savings come from
Money basis is stated in each row
Impact of inflation
Compares today's purchasing power with future money at retirement
Future money is the nominal amount at retirement; today's money is comparable purchasing power.
Plan assumptions
Retirement lifestyle summary
Today's money shows comparable purchasing power. Future money shows the estimated nominal amount in your selected currency at the retirement age after applying the inflation assumptions entered in the planner.
Retirement-age comparison
| Retirement age | Corpus required (future money at that age) | Retirement contribution required (from now) | Projected funding (from current plan before any increase) |
|---|
Projected funding is based on the current savings plan, not the retirement contribution required shown in the previous column.
Retirement expense breakdown
| Expense | Today → retirement (today's money) | Projected at retirement (future money) | Retirement rule / change |
|---|
Retirement cash-flow visuals
These charts show how spending evolves and compare the modelled required-corpus path with the portfolio implied by your current savings plan.
Household expense timeline
Age at the left edge is today; later points are nominal future-money amounts for those ages.
Retirement portfolio paths
The required-corpus path includes the selected safety buffer. Any unused reserve remains invested, so that path may finish above zero.
Methodology & important information
The model estimates the amount needed at retirement by discounting projected month-by-month retirement cash flows using the entered post-retirement return and then applying the selected safety buffer. Detailed mode can also apply category-specific inflation, expense rules, retirement income, one-time goals and lifestyle phases.
This report is an educational planning illustration based entirely on the information and assumptions entered. It does not predict investment returns, inflation, taxes, healthcare costs, longevity or market conditions. It is not individualized investment, financial, tax, legal, accounting or insurance advice. Actual outcomes can differ materially.
Methodology: carrowmont.com/retirement-calculator/methodology.html · Contact: contact@carrowmont.com
Built around cash flows, not a single expense number
Model changing expenses
Each detailed expense is inflated independently and can continue, change at retirement, end at a chosen age or start only after retirement.
Subtract retirement income
Pension, rent and annuity income reduce the monthly withdrawal required from the retirement portfolio.
Insert future goals
One-time goals that occur during retirement are inflation-adjusted to their chosen age and added to the retirement cash-flow schedule.
Discount every future cash flow
The engine calculates the amount required at retirement to finance the month-by-month net cash flows while the remaining portfolio earns your assumed post-retirement return.
Compare with your savings plan
Existing savings and recurring retirement contributions are projected to retirement to estimate the gap and the additional contribution required.
See exactly how the Carrowmont Retirement Planner builds the estimate.
The methodology page explains expense rules, inflation, retirement income, one-time goals, present-value calculations and the limitations of constant-return assumptions.
Stress-test a fixed inflation-adjusted withdrawal against weak early returns.
The separate Carrowmont 4% Rule Stress Test uses transparent annual deterministic scenarios. It does not change this Retirement Planner's cash-flow calculations.
Important questions
Why not simply inflate today's household spending?
Because many expenses change structurally. Education and loan payments may end, work-related transport can fall, while healthcare or travel can rise. Detailed mode lets you model those changes explicitly.
What does “today's money” mean?
For expense categories and one-time goals, enter what the item costs today. The planner applies the selected inflation assumption from your current age to the age when the cash flow occurs.
How should I enter a pension?
Enter the monthly amount you expect when that income begins and the age it begins. You can also give it an annual increase rate. The calculator does not estimate pension entitlement for you.
What happens if a home loan continues after retirement?
Set the expense rule to “Ends at age” and enter the actual expected payoff age. The model will include the payment during the early retirement years until that age.
Does this guarantee that the money will last?
No. The model uses constant assumptions. Actual market returns, inflation, taxes, healthcare needs and longevity can differ materially. A future version can add variable-return or Monte Carlo analysis.