Overview Calculation

Phase 1:
The Full Financial Plan

After the successfull fill outs our engine builds the full overview in three connected steps. First, it reads your existing trade history and savings behavior. Then it combines your current holdings with your planning inputs to project how your portfolio may evolve until retirement.

This overview stage produces the high-level structure of the plan: portfolio detail, transaction phase, portfolio estimate phase, and retirement phase. It is the master calculation that ties everything together.

It also builds a combined chart across the full journey, so the user can see the relationship between historical capital formation, pre-retirement growth, retirement withdrawals, and the S&P 500 benchmark in one connected view.

Detailed Estimate View

Phase 2:
Growth Until Retirement

After the overview is created, the detailed estimate phase breaks the accumulation journey down much further. It starts from your actual portfolio base and projects the years between now and your retirement year.

In the detailed estimate view, GoPortfolio expands the forecast into multiple scenarios, including a conservative path, your user-defined return path, and an S&P 500-based market reference. It also shows the path year by year and month by month.

This is where the user moves from a simple summary to a real projection engine: not just what the final number could be, but how the portfolio may build over time on the way to retirement.

Detailed Retirement View

Phase 3:
How Long Will It Last?

The retirement phase begins with the projected portfolio value at retirement and then simulates what happens once withdrawals begin. Your monthly retirement income and years in retirement drive this part of the model directly.

GoPortfolio calculates whether the portfolio appears sustainable, eroding, or depleted. It also tracks the projected balance over time and identifies the depletion year if the money runs out.

The detailed retirement endpoint then expands this further with annual and monthly overviews, comparing your real user-return scenario with the S&P 500 baseline so the user can evaluate retirement durability with much more precision.

Grounded in Your Real Data

The plan starts from your real holdings and your real transaction history, then layers your planning inputs on top instead of relying on generic assumptions alone.

Inflation-Adjusted Reality

The model does not treat inflation as an afterthought. It is part of the core logic, especially in retirement, where real purchasing power matters more than headline growth.

Detailed Phase-by-Phase Logic

The overview and the detailed estimate and retirement views work together. You get both a complete high-level plan and the deeper year-by-year and month-by-month breakdown behind it.

End-to-End Lifecycle View

From capital accumulation to retirement withdrawals, the entire journey is modeled in one connected system instead of forcing the user to jump between disconnected calculators.