Your $2,000 portfolio falls. An essential bill arrives in the same week. You planned to invest another $200 a month, but the bill has a deadline and the market does not.
A page beside your account could already say: “Pay current bills first. Invest available savings toward the chosen mix. Review the plan early if cash needs change.” Dates and amounts turn it into something you can use.
Write the decisions you need now
An investment policy statement (IPS) puts your portfolio's goals, limits and operating rules in writing. CFA Institute's framework covers these decisions. Your first version can fit on one page.
Start with your first investing plan and its time horizon, the time until the money is needed. Give each of the six fields below a fact or an action. “Stay calm” gives you no payment date.
Check actual withdrawal restrictions against your intended spending date.
Return to the $2,000 starting holdings from core and satellite, before either transition. Harbor and Tessel are our fictional companies; replace the example's amounts, dates and home-purchase goal with your own.
A portfolio of diversified funds can be a complete plan. Owning individual stocks is optional.
Writing “60/30/10” does not change what you own. Here, every invested dollar is still in stocks; bonds and cash are both below target. The October review sets the transition steps. Quarterly reviews then compare the actual mix with the plan.
Rebalancing maintains the chosen mix; a policy review asks whether that mix still fits. Lost income brings that review forward. Checking the plan does not commit you to a trade.
Test the missing fact
Before the transition, suppose the portfolio loses 20% in one week: $2,000 × 0.80 = $1,600. An essential $600 bill is due in four weeks. Keep this test simple: prices then stay flat, and you can withdraw in time without taxes or fees.
Before choosing to hold, sell or rebalance, which missing fact do you need?
Check the cash deadline
You need to know how much cash outside the portfolio can cover this bill by its deadline. The answer: only $100, after other committed expenses. That includes any emergency money available for this bill. The next $200 of spare income arrives after the deadline.
$600 − $100 = $500 must come from the portfolio.
$1,600 − $500 = $1,100 remains after the withdrawal.
If outside cash covered the bill, the same fall would create no need to sell for this expense. Compare the two ways of paying it: the market loss is identical, but the demand on the portfolio changes.
The money's job has changed. Revisit the spending date and transition plan before rebalancing. Paying the bill takes priority over restoring target weights.
Add this revision: “I need $500 from the portfolio within four weeks. Pause transfers that conflict with payment. Check actual access, costs and taxes before withdrawing. Review progress in seven days, then reset the transition plan.” The bill's deadline takes priority over the routine review date.
That is a working first policy. You can stop here.
If the portfolio is paying the bills
Use the retirement withdrawal example as a separate policy variant: $480,000 remains after year one, and the cash bucket is empty. Next year's $61,200 budget includes a tax allowance; $36,720 of outside income before tax leaves a $24,480 gross withdrawal.
If the $200 monthly cut to extras is workable, the planned withdrawal falls to $22,080. That is a spending decision, not an improved investment return.
Add a policy line: “At each December 31 review, after a negative investment year, test whether I can cut next year's extras by $200 a month. Check cash at each quarter-end and before large bills. Refill it from investment income or planned rebalancing, and revise the budget if those sources fall short.”
Confirm income dates, taxes and account access before using the rule. Refilling cash moves money within the $480,000; it does not add wealth.
Add a scorecard only when it helps
An optional annual scorecard needs a fair benchmark and a consistent way to measure returns. Name the period and how the return measure treats deposits and withdrawals. For any active part of the portfolio, state the evidence behind it, what would disprove it, and when to reconsider holding it.
Beating an index cannot tell you whether next year's bills are funded. Review performance annually; review the policy sooner when cash needs or life circumstances change.
Choose the detail your policy needs
Let the decision choose the reading. You already have a usable policy.
For the mix, asset allocation sets weights, correlation examines shared exposures and position sizing tests single-holding damage. Dollar-cost averaging covers the timing of money going into investments.
For results, measuring returns separates gains from deposits; benchmarks give a fair yardstick; volatility and beta describe return swings and market sensitivity; drawdowns measure losses from peaks.
For spending during losses, sequence risk explains why return order matters; when to sell connects a sale to its purpose. Optional details include Sharpe for return above cash per unit of variability, US capital-gains taxes for taxable gains and distributions, and US investment accounts for tax and access rules.
The behavior gap explores why your experience can differ from a fund's reported return.
In short
- A useful policy turns goals into dates, amounts and actions.
- Writing a target mix does not change the investments you own.
- A market fall and a cash shortfall are different reasons to review a plan.
- Revise the plan when the money's job changes.