The Life Starter
0 of 6 complete0%
Course Library · Lesson 2 of 6
Money · Guided lesson

Calculate a portfolio withdrawal scenario

About 10 minutes · 3 reading + 7 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A fictional retirement-income model with spending gap, withdrawal scenarios, inflation, return-order comparison and dated rule questions.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • An income/spending map with an annual and monthly gap.
  • A one-year withdrawal roll-forward and conditional rate explanation.
  • An inflation-adjusted spending table with category limits.
  • A return-order stress table and sequence-risk explanation.
  • A gross/net withdrawal worksheet and dated rule-verification list.
  • A retirement scenario packet and spending-review policy.

Review and revise

Use these criteria to check your work and choose what to improve.

  • All supplied records reconcile and the decision uses the named case rules.
  • Calculations show units, intermediate values and a second check.
  • Changed-input practice revises the affected result and identifies uncertainty.
  • The final project combines six lesson records, separates fictional assumptions from current rules, and states a supported next step.
Open the full course project
Want more background?
Before you begin

The idea in everyday life

This is an original fictional practice case. No account, payment, personal record or outside participation is required. Opening portfolio $200,000; annual withdrawal $8,000 at start of year; subsequent return 5%; no fees or tax.

The idea

A withdrawal percentage describes the modeled draw, not a guarantee that savings last.

Follow along

Calculate a portfolio withdrawal scenario — worked practice

A withdrawal percentage describes the modeled draw, not a guarantee that savings last.

Use paper or a local table; label all amounts as fictional USD unless the case names another unit. Opening portfolio $200,000; annual withdrawal $8,000 at start of year; subsequent return 5%; no fees or tax.

Withdrawal timing and return inputs

Paste at A1.

AInput or recordBSupplied value
Opening portfolio USD200000
Withdrawal at year start USD8000
Return after withdrawal percent5
Fees or tax USD0

Copy as plain text
  1. 1. Step 1: Calculate the opening withdrawal percentage

    Calculate the opening withdrawal percentage.

    You should see: 8000/200000=4%.

    A withdrawal percentage describes the modeled draw, not a guarantee that savings last.

  2. 2. Step 2: Subtract the withdrawal before returns

    Subtract the withdrawal before returns.

    You should see: $192,000 remains invested.

    Keep this intermediate result so the final decision can be checked.

  3. 3. Step 3: Apply the stated annual return

    Apply the stated annual return.

    You should see: 192000×1.05=$201,600.

    Keep this intermediate result so the final decision can be checked.

  4. 4. Step 4: State the conditional result

    State the conditional result.

    You should see: End balance $201,600 only under this return/timing assumption; 4% is not certified safe.

    Keep this intermediate result so the final decision can be checked.

Now change one thing

Annual withdrawal becomes $10,000 with the same start-year timing and return. Ending balance?

Your work

What to finish

A one-year withdrawal roll-forward and conditional rate explanation.

Common mistake

Watch for this

Presenting a modeled percentage as a universally safe withdrawal rule.

How can I tell I understand it?

Model a start-year withdrawal and subsequent return with explicit timing on the supplied changed case while preserving the stated rule and checking the final record.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1$100,000 opening, $5,000 start-year withdrawal, then 4% return: ending?
2Does one positive-return year establish a sustainable lifetime withdrawal rate?
3A model moves withdrawal from start to end of year. What must be revised?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
2
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

Go to the knowledge check
Tools, templates, and lesson sources

Tools and templates

Tools open in a new tab so you can keep your place here.

Sources and further reading

Explore the references behind this lesson.

SEC Investor.gov — Managing Lifetime Income
Source & access notes · checked 2026-10-01

Official page opened/read during Money expansion authoring; checked the relevant concept and access state. These sources do not establish funding eligibility.

Access: Readable official webpage inspected with the web reader on 2026-10-01. No interactive-tool operation is claimed.

Reuse: Original fictional practice, questions and calculations; paraphrased concepts with a source link. No source exercise copied.

Report a problem with this lesson

Tell us what went wrong. Please leave out personal information and private project contents.

No sign-in needed.