The Universal Calculation Engine
The Universal Calculation Engine

Choosing sixty forty versus eighty twenty for a 401k

Part of: Risk vs Return

You use risk and return on statements, plan sites, and tax forms, with the same time range you care about.

On the document

risk and return shows up on statements, plan portals, and tax forms, each with a different rule.

Pick one document from this month. Map only risk and return on that page before you generalize.

Related lessons

Related lesson and Another angle show two layouts people confuse. Read both before you copy a friend’s spreadsheet.

If numbers look correct but the conclusion feels off, check whether you switched properties, years, or account types halfway through the problem.

Check your numbers now

This month’s paper

Circle the expense ratio on one fund fact page. If your tool uses zero, you are not modeling the same product.

Compare

MomentVerify for risk and return
New job, new 401(k)Match, vesting, fund fees
Bonus hitTax bracket and account choice
Quarter statementRebalancing drift
One document
One definition of risk and return

Reconcile

Core lesson

Related: Risk vs Return. To test sensitivity, change one input at a time in the calculator.

Use the calculator

FAQ

Where is the main lesson?

Risk vs Return is the hub with related lessons linked from it.

Which calculator should I open first?

Use Investment growth or Lump sum growth for long horizons; Savings goal for targets; Debt payoff when comparing to loans.