The Q4 Portfolio Checkup: Five Things to Review Before Year-End

There is a meaningful difference between checking your portfolio and actually reviewing it. Checking is glancing at a balance. Reviewing is working through a structured set of questions that give you a clear picture of where things stand and what, if anything, warrants attention.

The fourth quarter is an especially useful time for this kind of structured look. Tax-loss harvesting windows, contribution deadlines, and benefit elections all converge before December 31. The investors who navigate year-end well are typically those who approach it with a checklist rather than a hunch.

What follows is a five-part framework for a thorough Q4 portfolio checkup. It is designed to be worked through methodically, covering the areas that tend to matter most before the calendar resets. None of this constitutes personalised financial advice, and a qualified financial adviser can help you apply any of these considerations to your specific circumstances.

Markets rarely stay still, and over a year of returns, your portfolio's actual mix of stocks, bonds, and other assets can shift meaningfully away from whatever target you started with. This is called allocation drift, and it happens passively even when you make no changes at all.

Consider a hypothetical investor who began the year targeting 60% equities and 40% fixed income. If domestic equities had a strong year while bonds moved sideways, that same portfolio might now sit at 68% equities and 32% fixed income without a single trade being made. Whether that matters depends on how far outside a defined tolerance band the drift has taken things, but it is worth knowing.

A common approach among investors is to establish rebalancing trigger bands rather than a fixed schedule. For example, some portfolios are reviewed when any asset class drifts more than five percentage points from its target. Others use a calendar trigger, with Q4 being a natural review point. Either way, the question to ask is straightforward: does my current allocation still reflect how I intend to invest?

If rebalancing feels relevant, it is also worth considering which accounts to use. Rebalancing within tax-advantaged accounts like a 401(k) or IRA generally does not trigger a taxable event, while selling appreciated assets in a taxable brokerage account may. For more on how to think about this, our piece on rebalancing your portfolio in retirement walks through the mechanics in detail.

Before December 31, it is worth pulling together a clear picture of where you stand on gains and losses for the year. This is one of the more time-sensitive parts of the Q4 review because many of the options available here disappear at year-end.

Realised gains are profits you have already locked in by selling a position during the year. These will appear on your tax return. Unrealised gains are paper profits on positions you still hold. They are not taxable yet, but they become relevant when you are considering whether to sell something before or after December 31.

A few things worth examining during your Q4 review:

• Tax-loss harvesting opportunities: If you hold positions that are currently showing a loss, selling them before year-end can generate a capital loss that offsets realised gains elsewhere in your taxable accounts. Under current IRS rules, capital losses first offset capital gains of the same type, then the opposite type, and then up to $3,000 of ordinary income per year, with any remaining loss carried forward. The IRS wash-sale rule means you cannot immediately repurchase a substantially identical security within 30 days before or after the sale, so timing matters.
• Long-term vs. short-term character: Gains on assets held more than one year are generally taxed at lower long-term capital gains rates (0%, 15%, or 20% depending on your income), while short-term gains are taxed as ordinary income. Knowing where your open positions fall can inform decisions about whether to hold or realise them before year-end.
• Capital gains bracket positioning: Investors whose income falls close to a bracket threshold may find it useful to review whether realising additional gains or losses before December 31 could shift their effective rate on investment income.

A tax professional or financial adviser can help you map out the implications for your specific situation. For a broader look at year-end tax planning moves, see our end-of-year retirement tax checklist.

Retirement account contribution limits are annual, and most cannot be carried forward. If the year ends with unused room, that opportunity is gone. Q4 is a practical time to check where you stand across your accounts.

For 2024, the IRS set the following limits (always confirm current-year figures at irs.gov, as limits are subject to annual adjustments):

• 401(k), 403(b), and most employer-sponsored plans: $23,000 annual limit, with a catch-up contribution of an additional $7,500 for those aged 50 and older, bringing the total to $30,500.
• IRA and Roth IRA: $7,000 annual limit, with an additional $1,000 catch-up for those 50 and older. IRA contributions can be made until the tax filing deadline (typically April 15 of the following year), but 401(k) contributions must be made through payroll by December 31.
• HSA: If you are enrolled in a qualifying high-deductible health plan, an HSA is worth reviewing separately. HSA funds roll over indefinitely and carry a triple tax advantage: contributions are pre-tax, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. For 2024, the contribution limit is $4,150 for self-only coverage and $8,300 for family coverage, with a $1,000 catch-up for those 55 and older. More detail on HSAs as a long-term savings tool is covered in our article on HSA vs FSA and which one builds retirement wealth.

One practical item to check: if your 401(k) contributions are set as a flat dollar amount per paycheck rather than a percentage of salary, a raise or bonus received during the year may mean you are on track to fall short of your intended contribution. Reviewing the math before your last few paychecks of the year gives time to adjust through payroll if your plan allows it.

This is the section most investors skip during a routine review, and it is often the one that creates the most consequential problems later. Beneficiary designations on retirement accounts and life insurance policies are legally binding documents. They take precedence over what your will says, meaning an outdated designation can route assets in a direction you no longer intend.

Life changes that warrant a beneficiary review include marriage, divorce, the birth of a child or grandchild, or the death of a previously named beneficiary. A hypothetical example: consider an investor who named a former spouse as the primary beneficiary on a 401(k) before a divorce was finalised, then remarried and updated a will but never updated the retirement account form. In that scenario, the assets could pass to the former spouse regardless of the will's instructions. This is a well-documented issue in estate planning.

Our article on beneficiary designations and how they override your will covers this topic in depth and is worth reading alongside your Q4 review.

Beyond beneficiaries, Q4 is also a good time to handle general account housekeeping:

• Check that contact information, mailing addresses, and email addresses are current across all accounts.
• Confirm that any old employer plans have been addressed. Forgotten 401(k)s from previous jobs are more common than most people expect.
• Review whether account titling aligns with your current estate planning intentions, particularly for taxable brokerage accounts and bank accounts.
• If you have turned 73 during the year, confirm that any Required Minimum Distributions (RMDs) from traditional retirement accounts have been taken. The IRS imposes a significant penalty for missed RMDs, currently set at 25% of the amount that should have been withdrawn (reduced to 10% if corrected promptly, under SECURE 2.0 provisions).

The final item in a Q4 portfolio review looks forward rather than back: what cash will you need in the next 12 to 18 months, and where is it coming from?

This question matters more than it might seem. Investors who need to draw cash from their portfolio in the near term face a different set of considerations than those whose withdrawals are still years away. Selling assets to meet a short-term need during a market downturn can permanently reduce long-term purchasing power, a dynamic known as sequence-of-returns risk.

A common approach among investors who are near or in retirement is to maintain a near-term cash reserve outside of their invested portfolio. This might take the form of a high-yield savings account, short-term CDs, or a money market fund, covering one to two years of anticipated withdrawals. Holding this separately means that a market decline in the investment portfolio does not necessarily force a sale at an inopportune time.

For those still in the accumulation phase, the question is slightly different: are there any large planned expenses in the coming year (home renovation, tuition payments, a vehicle purchase) that should be funded from liquid savings rather than investment accounts? Identifying those needs in Q4 gives time to position cash accordingly rather than reacting in the moment.

Key questions to consider during this part of the review:

• What is my expected income and expense picture for the next 12 months?
• Do I have adequate liquid reserves outside my retirement accounts to cover near-term needs?
• Are there any anticipated irregular expenses that would require liquidating investments if not planned for?
• If I am drawing from my portfolio, does my withdrawal sequence still align with my tax diversification goals?

The value of a structured Q4 portfolio review is not just in the individual items it covers. It is in the discipline of approaching your finances with intentionality at regular intervals, independent of what markets are doing or how anxious the financial headlines feel in any given week.

Investors who review their portfolios on a scheduled basis tend to make fewer reactive decisions. They catch allocation drift before it becomes significant. They use available tax planning windows because they are aware of them in advance. They update beneficiary forms because it is on the list, not because a life event forced the question.

None of the five items in this framework requires a dramatic overhaul. Most reviews will confirm that things are broadly on track, with a few minor adjustments worth considering. That outcome is itself valuable, because it provides a clear-eyed foundation for the year ahead rather than a lingering sense of uncertainty about whether anything was missed.

Working through this list with a qualified financial adviser can add meaningful depth to the process. An adviser can help model the tax implications of specific decisions, identify planning opportunities that are easy to overlook, and ensure that the review connects to your broader retirement plan rather than treating each item in isolation.

This article is for general educational purposes only and does not constitute personalised financial, tax, or investment advice. Please consult a qualified financial adviser and tax professional before making any decisions based on information in this article.