Calculating Your Breakeven Point When Comparing a Cash-Value Policy to a Taxable Brokerage Account

Introduction: Why “Which Is Better” Is the Wrong First Question

Most comparisons between cash-value life insurance and taxable brokerage investing start with the wrong question. They ask “which one is better,” as if there’s a universal answer, and then reach for average return assumptions that make one option or the other look obviously superior depending on which numbers the writer picked.

The right question is narrower and more useful: at what point in time does one option overtake the other, given my specific premium, my specific tax bracket, and my specific expected investment return? That point in time is your breakeven point, and calculating it — rather than relying on someone else’s generic comparison — is the only way to make this decision with numbers that actually apply to you.

This matters because the honest answer to “cash-value insurance or brokerage account” is: it depends entirely on your time horizon. In the early years of a cash-value policy, the brokerage account almost always wins, often by a wide margin, because insurance overhead front-loads costs while a brokerage account starts compounding immediately. But because cash-value policies have lower ongoing costs in some cases, and offer tax-deferred (sometimes tax-free, if structured correctly) access to gains, there can be a crossover point — sometimes 15, 20, or even 30+ years out — where the insurance policy’s numbers catch up or overtake the brokerage account, depending on your assumptions.

This article walks through exactly how to calculate that breakeven point yourself, with a full worked example, so you’re not relying on a rule of thumb that may not fit your actual numbers.

Part 1: What You’re Actually Comparing (And Why It’s Not Apples to Apples)

Before running any numbers, it’s worth being precise about what a “cash-value policy” and a “taxable brokerage account” actually are, because they’re structurally different products solving overlapping but not identical problems.

Cash-Value Life Insurance (Whole Life, IUL, or Variable Life)

A cash-value policy bundles a death benefit with a savings component. Part of every premium dollar pays for the cost of insurance (which increases with age) and administrative overhead; the remainder builds cash value, which grows tax-deferred and can be accessed via loans or withdrawals during your lifetime, generally without immediate tax consequences if the policy is structured and managed correctly (though loans reduce the death benefit and accrue interest, and mismanaged policies can lapse with tax consequences).

Taxable Brokerage Account

A brokerage account is a pure investment vehicle — no insurance component, no mortality cost, and typically much lower fees (an index fund might charge 0.03–0.20% annually versus a cash-value policy’s combined cost load, which is frequently 1.5–3%+ in the early years and often remains higher than a simple index fund even decades in). The tradeoff: your investment gains are subject to capital gains tax when realized, and dividends are typically taxed in the year received, whereas the insurance policy’s growth is tax-deferred (and can be tax-free if accessed via policy loans rather than withdrawals, provided the policy doesn’t lapse).

Why This Comparison Isn’t Purely About Investment Return

Because a cash-value policy includes a death benefit, part of what you’re paying for isn’t investment growth at all — it’s insurance protection. A truly apples-to-apples comparison should really ask: “If I didn’t need the permanent death benefit, would I be better off in a brokerage account?” This is why many advisors frame the honest comparison as cash-value policy vs. (term insurance + brokerage account) rather than cash-value policy vs. brokerage account alone — because the brokerage account alone doesn’t replace the insurance protection you’d be giving up. We’ll address both framings in this article, but the core breakeven math is the same either way; only the “cost of comparable insurance” figure changes what you’re subtracting.

Part 2: The Variables That Determine Your Breakeven Point

Before calculating anything, you need five real numbers specific to your situation. Generic online calculators often use industry averages that don’t reflect your actual policy or your actual tax situation, so pulling your real figures matters enormously here.

Variable 1: Your Actual Annual Premium

This is on your policy illustration or your in-force statement if you already own a policy. Use the actual dollar figure, not a rounded estimate.

Variable 2: Your Policy’s Illustrated (or Actual) Cash Value by Year

Every permanent policy comes with a year-by-year cash value projection — usually shown both under a guaranteed (worst-case) scenario and a non-guaranteed (current assumption) scenario. You’ll want both, because comparing your brokerage projection against only the optimistic insurance illustration overstates the insurance side’s competitiveness.

Variable 3: Your Expected Brokerage Account Return, Net of Fees

This should be realistic and conservative, not a cherry-picked historical peak. A common approach is to use a long-term historical average for a diversified portfolio, then subtract your actual fund expense ratios (often just 0.03–0.20% for low-cost index funds) to get a net expected return. Many financial planners use a range between 6–8% nominal for a diversified stock-heavy portfolio over long horizons, understanding that any single year can vary enormously and that this is an estimate, not a guarantee.

Variable 4: Your Marginal and Capital Gains Tax Rates

This determines how much of your brokerage account’s growth you actually keep. You’ll need:

• Your ordinary income tax bracket (relevant for any dividends taxed as ordinary income, and for bond interest if your portfolio includes bonds)
• Your long-term capital gains tax rate (0%, 15%, or 20% federally depending on income, plus any applicable state tax)
• Whether you’re likely to hold investments long enough to qualify for long-term rates (generally more than one year) versus trading frequently, which would expose gains to higher short-term rates

Variable 5: The Cost of Comparable Term Insurance (If You’re Doing the Fair Comparison)

If you’re comparing cash-value insurance against “term + brokerage” rather than brokerage alone, you need a real term insurance quote for the same death benefit and a comparable term length, so you can subtract that cost from your available investment amount.

Part 3: The Breakeven Formula, Step by Step

Here’s the actual calculation, broken into stages.

Step 1: Determine Your Annual “Investable Amount” for the Brokerage Side

If comparing cash-value insurance to brokerage-alone: Investable amount = Full annual premium you’d otherwise pay into the policy

If comparing cash-value insurance to term + brokerage (the fairer comparison): Investable amount = Annual premium − Cost of equivalent term insurance

Step 2: Project the Brokerage Account’s After-Tax Value Year by Year

For each year, grow the account by your assumed net return, then account for the tax drag. There are two ways gains get taxed in a brokerage account, and both matter:

• Unrealized gains aren’t taxed until sold, so a buy-and-hold strategy in index funds defers most capital gains tax similarly (though not identically) to how insurance defers tax on cash value growth.
• Dividends are typically taxed in the year received, even if reinvested, which creates an annual tax drag a cash-value policy doesn’t have during the accumulation phase.

A reasonably accurate simplified approach: reduce your assumed gross return by an estimated annual tax drag from dividends (often modeled at 0.3–0.6 percentage points annually for a typical diversified index portfolio, since qualified dividend yields are usually modest), and then apply capital gains tax only at the point of withdrawal, on the gain portion.

Step 3: Project the Insurance Policy’s Cash Value Year by Year

Pull this directly from your illustration (both guaranteed and non-guaranteed scenarios). If you don’t have an illustration, use the general patterns described in the earlier sections of this content series: minimal net cash value in years 1–5, catching up to cumulative premiums paid somewhere around year 10–15 for whole life, and continuing to grow from there at whatever the credited or guaranteed rate is.

Step 4: Adjust the Insurance Side for Access Method

If you plan to access the cash value via policy loans (the common tax-efficient method), the amount you can access is generally lower than the full cash value once you’re planning to actually spend it, since loans accrue interest and reduce the death benefit — but for a pure accumulation comparison (not accessing funds), you can compare cash value directly against the brokerage account’s pre-liquidation value.

If you plan to eventually surrender the policy and take the cash value as a lump sum, remember that the growth portion (cash value minus total premiums paid) is generally taxed as ordinary income upon surrender — this is an important point many comparisons miss, assuming insurance growth is always tax-free when it’s actually only tax-deferred (or tax-free specifically via the loan mechanism, not simple surrender).

Step 5: Compare Year by Year Until the Lines Cross

Plot both projections side by side, year by year, and identify the year where the brokerage account’s after-tax value first falls below (or, if starting lower, rises above) the insurance policy’s cash value. That crossover year is your breakeven point.

Part 4: A Full Worked Example

Let’s build a complete, real-numbers example for a 35-year-old considering a $500,000 whole life policy versus term insurance plus a brokerage account.

The Inputs

• Whole life premium: $7,200/year
• Comparable 20-year term policy for $500,000: $550/year
• Investable amount for term + brokerage strategy: $7,200 − $550 = $6,650/year
• Assumed net brokerage return: 7% nominal, reduced by an estimated 0.4% annual dividend tax drag = effectively 6.6% net compounding, with capital gains tax applied only at eventual withdrawal
• Capital gains tax rate at withdrawal: 15% (assumed mid-range federal rate, ignoring state tax for simplicity)
• Whole life cash value (non-guaranteed illustration): Following typical patterns, reaching roughly cumulative-premiums-paid around year 12, then growing at an effective ~4% thereafter

The Year-by-Year Comparison

Year	Cumulative Premiums (WL)	Whole Life Cash Value (non-guaranteed)	Brokerage Account Pre-Tax Value	Brokerage After-Tax Value (if liquidated, 15% on gains)
5	$36,000	~$21,000	~$38,000	~$36,800
10	$72,000	~$52,000	~$92,000	~$86,600
15	$108,000	~$92,000	~$168,000	~$154,400
20	$144,000	~$142,000	~$275,000	~$247,600
25	$180,000	~$205,000	~$425,000	~$377,600
30	$216,000	~$285,000	~$645,000	~$566,000

In this specific example, using these specific assumptions, the brokerage account (via term + invest) leads at every single measured year, and the gap widens over time rather than narrowing. This is a common outcome when using a realistic long-term equity return assumption (6–7%+) against a whole life policy’s typical 3–4% effective long-term crediting rate — because even after accounting for capital gains tax at the end, the underlying growth rate differential compounds dramatically over decades.

Where the Math Changes: A Lower Assumed Brokerage Return

The result above depends heavily on the assumed brokerage return. If we instead assume a more conservative 4.5% net brokerage return (reflecting either a more conservative asset allocation or more pessimistic market assumptions) against the same whole life policy:

Year	Whole Life Cash Value	Brokerage After-Tax Value (4.5% net assumption)
10	~$52,000	~$78,000
20	~$142,000	~$195,000
30	~$285,000	~$355,000

Even under this more conservative brokerage assumption, the brokerage/term combination still leads throughout — it simply leads by a smaller margin. This illustrates an important structural point: because whole life’s guaranteed and typical non-guaranteed crediting rates tend to sit in the low single digits, the brokerage account needs a genuinely pessimistic, near-bond-like return assumption before whole life catches up, and even then, it often doesn’t fully close the gap within a normal working lifetime.

When Would the Insurance Side Actually Win?

Based on running this math across many assumption sets, the scenarios where a cash-value policy’s numbers can overtake a brokerage account typically involve one or more of the following:

• A brokerage return assumption at or below the policy’s guaranteed floor (i.e., you assume the market performs unusually poorly over your entire holding period)
• A very high marginal tax bracket combined with a high-turnover or actively managed brokerage strategy, which increases the brokerage side’s tax drag substantially beyond the simplified estimate used above
• A policy with unusually strong dividend performance (for a mutual whole life insurer) or unusually favorable IUL crediting history, pushing the insurance side’s effective return meaningfully above the low-single-digit range used in this example
• Counting the death benefit’s value explicitly — if you assign a dollar value to permanent coverage that you’d otherwise have to pay for annually for life (since term insurance becomes very expensive or unavailable at older ages), the insurance side’s “total value” (cash value + the value of guaranteed insurability) can look more competitive, though this reframes the comparison beyond pure investment return

Part 5: Why Breakeven Points Are Usually Later Than People Expect

A common misconception is that cash-value policies “catch up” to brokerage accounts sometime in the 10–15 year range because that’s roughly when cash value catches up to cumulative premiums paid. But catching up to your own premiums isn’t the same as catching up to a properly invested brokerage account, which has been compounding the entire time. This is one of the most important distinctions in this entire comparison, and it’s frequently glossed over in insurance sales materials, which often show a “crossover” chart comparing cash value only against cumulative premiums — not against what those same premium dollars could have earned if invested elsewhere.

Part 6: Adjusting the Calculation for Your Specific Tax Situation

Your personal tax bracket materially changes where your breakeven point falls, so it’s worth running the numbers under your actual situation rather than a generic assumption.

Higher Tax Bracket Scenario

If you’re in a high marginal tax bracket, the brokerage side’s tax drag increases — both on dividends taxed annually and on capital gains at eventual withdrawal. This shifts the breakeven point earlier (more favorable to insurance) compared to a lower-bracket taxpayer, though for most realistic combined federal and state capital gains rates (typically 20–35% combined for high earners), the underlying return-rate gap in the worked example above is usually still large enough that the brokerage side remains ahead, just by a smaller margin.

Using Tax-Advantaged Accounts Instead

It’s worth noting explicitly: if you have available space in a 401(k), IRA, or HSA, investing there instead of a taxable brokerage account removes most or all of the tax drag from the brokerage side of this comparison entirely, making the “buy term, invest the rest” side even more favorable relative to cash-value insurance. This comparison is specifically about taxable brokerage accounts because that’s the fairer like-for-like comparison to a cash-value policy’s flexibility (no contribution limits, no early withdrawal penalties) — but if you haven’t yet maxed out tax-advantaged space, filling that first, before either a taxable brokerage account or a cash-value policy, is generally the better move.

Part 7: A Simplified Worksheet You Can Use With Your Own Numbers

To calculate your own breakeven point, gather these figures and walk through the steps:

Inputs to gather:

1. Annual premium for the cash-value policy you’re considering: $__________
2. Cost of comparable term insurance for the same death benefit: $__________
3. Your investable difference (Line 1 − Line 2): $__________
4. Your policy’s illustrated cash value at years 10, 20, and 30 (both guaranteed and non-guaranteed): $__________ / $__________ / $__________
5. Your assumed net brokerage return (after fund fees and estimated dividend drag): __________%
6. Your applicable long-term capital gains tax rate: __________%

Calculation steps:

1. Compound Line 3 annually at the rate from Line 5 to project the brokerage account’s pre-tax value at years 10, 20, and 30.
2. At each year, calculate the taxable gain (projected value minus cumulative contributions) and apply the rate from Line 6 to estimate the after-tax value if liquidated at that point.
3. Compare each year’s after-tax brokerage value against the corresponding cash value figures from Line 4.
4. Identify whether and when the lines cross — that’s your estimated breakeven point under these assumptions.
5. Re-run the calculation with a more conservative brokerage return assumption (subtract 1.5–2 percentage points) to see how sensitive your breakeven point is to market performance — this stress test matters because it shows you how much of your conclusion depends on an assumption that isn’t guaranteed.

Part 8: What the Breakeven Point Doesn’t Capture

Even a precise breakeven calculation leaves out factors that matter for a full decision, and it’s worth being explicit about them so the math doesn’t crowd out real considerations.

The Value of Guaranteed Permanent Coverage

If you have a genuine need for lifelong death benefit coverage — a dependent with lifelong needs, an estate tax liability, a business succession requirement — a brokerage account, no matter how large, doesn’t replace that guarantee unless it’s specifically earmarked and sufficient for that purpose. The breakeven calculation measures accumulation value, not insurance value, and for people with a genuine permanent insurance need, the comparison isn’t purely about which number is bigger.

Liquidity and Access Differences

A brokerage account can generally be accessed at any time with no loan mechanics, though early liquidation triggers capital gains tax immediately. A cash-value policy’s loan feature can provide access without immediate taxation, but carries loan interest and reduces the death benefit until repaid, and mismanaged loans can cause a policy to lapse — which can trigger a surprising and unwelcome tax bill on the “phantom” gain that was never actually received in cash.

Behavioral Discipline

Some proponents of cash-value insurance argue that the “forced savings” discipline of a required premium payment leads real people to actually save consistently, whereas a voluntary brokerage contribution is easier to skip in a tight month. This is a legitimate behavioral consideration for some people, though it comes at the structural cost calculated throughout this article, and the same discipline could, in principle, be achieved through an automatic brokerage contribution set up the same way a premium payment is.

Creditor Protection

In many states, cash value in a life insurance policy receives some degree of creditor protection that a standard taxable brokerage account does not. This varies significantly by state law and isn’t a factor in every situation, but for individuals in creditor-risk-prone professions, it’s worth researching your specific state’s protections before dismissing this factor.

Part 9: Common Mistakes When Calculating Breakeven

Mistake 1: Comparing cash value against cumulative premiums instead of against invested premiums. As discussed in Part 5, this dramatically understates how competitive the brokerage side really is.

Mistake 2: Using an unrealistically high insurance crediting rate assumption. Non-guaranteed illustrations, particularly for IUL, often assume historical average index performance without accounting for the cap reducing actual credited returns — always run the guaranteed illustration as your floor case.

Mistake 3: Ignoring capital gains tax entirely on the brokerage side, or applying it as if all gains are taxed annually. Neither is accurate — unrealized gains aren’t taxed until sold, which is a meaningful advantage that shouldn’t be ignored, but gains are eventually taxed at liquidation, which shouldn’t be ignored either.

Mistake 4: Not adjusting for the cost of comparable term insurance when doing the fair comparison. Comparing a whole life premium against the full brokerage account without subtracting the cost of equivalent term coverage overstates the brokerage side’s investable amount.

Mistake 5: Assuming the breakeven point, once calculated, is permanent. Actual market returns, actual dividend performance on the policy, and tax law can all shift over decades — a breakeven calculation is a snapshot based on current assumptions, not a guarantee, and it’s worth revisiting periodically as actual performance data (both for your investments and your policy’s actual, not illustrated, performance) becomes available.

Frequently Asked Questions

Is there a rule-of-thumb breakeven year that applies to most cash-value policies? Not reliably — the breakeven point depends heavily on your specific premium, your policy’s actual crediting rate, your tax bracket, and your brokerage return assumption. Generic rules of thumb (like “whole life catches up around year 15”) often conflate catching up to cumulative premiums with catching up to a properly invested alternative, which are very different things.

Does a policy loan avoid the tax comparison entirely? Policy loans are generally not taxed as income when taken, which is a genuine advantage, but they accrue interest and reduce the death benefit, and if the policy lapses with an outstanding loan, the loan amount can become taxable as a gain in that year — so it’s not entirely tax-free in all circumstances, only tax-deferred with a specific mechanism to potentially avoid recognition.

Should I include the death benefit’s dollar value in my breakeven calculation? Only if you have a genuine ongoing need for permanent coverage that you’d otherwise have to pay for separately. If your insurance need is temporary (income replacement during working years), the term insurance cost already accounts for that need in the “term + brokerage” comparison, and adding the whole life death benefit’s value on top would double-count the insurance component.

How often should I recalculate my breakeven point if I already own a policy? Reviewing it every few years, using your policy’s actual in-force illustration (not the original sales illustration) against updated market return assumptions, is a reasonable practice — actual policy performance, particularly for IUL where caps can change, sometimes diverges meaningfully from original projections.

Is a taxable brokerage account always the better choice once the numbers favor it? Not necessarily — the breakeven calculation measures pure accumulation value, not the value of guarantees, permanent coverage, or creditor protection, which may matter enough to some individuals to justify a lower expected accumulation value in exchange for those features.