Portfolio rebalancing calculator

Rebalance your portfolio with plain-English trade instructions.

Rebalance Helper helps DIY investors compare holdings to a target allocation, review portfolio drift, route new cash, and export a practical rebalance plan.

5 portfolio planning tools
Client-only browser-session workflow
Manual trade review boundary
Portfolio rebalance plan Cashflow Helper
Client-only
Current signal New cash is routed toward the most underweight sleeve.

Cashflow Helper keeps contributions one-sided while using the same sleeve exposure model as the full rebalance calculator.

Input Manual or CSV holdings
Targets Editable allocation presets
Output Plain-English instructions
Privacy No account linking

Rebalance Helper tools

Portfolio rebalancing, cashflow investing, withdrawals, and savings planning.

Use one client-only workspace to turn holdings, target allocations, and retirement assumptions into reviewable investing plans.

Cashflow investing

Cashflow Helper

Decide where new money should go without forcing unnecessary sells.

  • Routes cash toward underweight sleeves
  • Keeps contribution workflows one-sided
  • Produces concise buy instructions
Retirement portfolios

Portfolio Helper

Compare supported retirement portfolios across historical retirement periods.

  • Historical retirement-period comparisons
  • Supported portfolio presets
  • Allocation tradeoff review
Retirement income

Withdrawal Helper

Turn workbook assumptions into current-year retirement spending guidance.

  • 3.5% Base Rule and BH Autopilot guide rails
  • Monthly spending equivalents
  • Historical path mode using monthly OPTRA returns
Savings goals

Savings Helper

Work backward from retirement goals and contribution assumptions.

  • Contribution and goal-solving workflows
  • Historical accumulation context
  • Practical savings target planning

How it works

Enter holdings, set targets, export a rebalance plan.

Rebalance Helper calculates allocation drift and explains the route. It does not place trades, link brokerage accounts, or hide assumptions.

01

Enter holdings

Add positions manually or import a pared-down CSV.

02

Set the target

Start from a preset or edit the allocation you intend to hold.

03

Review the route

Use full rebalance mode or one-sided Cashflow Helper.

04

Export the instructions

Print the plan or export a trade-instruction CSV.

FAQ

Portfolio rebalancing questions, answered quickly.

What is Rebalance Helper?

Rebalance Helper is a portfolio rebalancing calculator that compares current holdings with a target allocation and produces reviewable trade instructions.

Does it place trades?

No. Rebalance Helper is decision-support software. It prepares a plan; users review prices, taxes, account rules, and execution details.

Can it handle new cash?

Yes. Cashflow Helper routes new money toward underweight sleeves while keeping the workflow one-sided.

Where does portfolio data go?

The app is designed for browser-session use with manual entry or CSV import and no hosted brokerage account linking.

Product principles

Clear plans, local data posture, manual execution.

Portfolio data stays local to the session

Holdings and target allocations are designed to stay in browser memory for the current session.

Plain language before dense math

The product shows practical instructions first, with methodology close enough for review.

Decision support, not execution

Users remain responsible for live prices, taxes, fees, lot selection, whole shares, and trade execution.