2026 Year-End Financial Planning: A Q4 Checklist

The final quarter of the year is a great time to get your finances organized before the end of the year. Since we are headquartered in California, we are keeping this blog focused on California residents. Year-end planning deserves extra attention because federal and California tax rules don't always line up. While some decisions can wait until tax season, others need to happen before year-end to affect your finances. 

Here's a simple Q4 plan to help you finish 2026 strong and start 2027 with a clear direction. 

1. Start With a 2026 Tax Checkup

Before making year-end tax moves, it’s a good idea to estimate where you'll finish the year financially.  Review your latest paystub and consider any additional income from bonuses, investments, freelance work, rental property, or stock compensation. Then compare your expected tax liability with your federal and California withholding and any estimated tax payments. This is especially important if you had a major financial change during 2026 like a raise, new job, large bonus, stock sale, business income, or significant investment gain. 

2. Check Your Retirement Contributions

Pull up your latest paystub and look at your year-to-date retirement contributions. For 2026, employees can generally contribute up to $24,500 to a 401(k), 403(b), or governmental 457(b) plan. The general catch-up contribution for people 50 and older is another $8,000, while qualifying employees ages 60–63 can have a higher $11,250 catch-up limit. 

Make sure you are contributing enough to receive your full employer match if your budget allows. If you want to increase contributions, to reduce your taxable earnings before year-end, don't wait until the final paycheck, because payroll changes can take time, especially in the new year when everyone is preparing for tax season. 

Also remember that the 2026 IRA contribution limit is $7,500, or $8,600 if you're 50 or older. IRA contributions generally have a later deadline than workplace retirement contributions, giving you additional planning flexibility. It’s best to check in with your CPA to verify that you’re on track to maximize your tax advantages. 

3. Review Investments Before December

If you have a taxable brokerage account, review your realized gains and losses for the year. 

If you've sold investments at substantial gains, investments currently sitting at losses could potentially provide tax-planning opportunities through tax-loss harvesting. But don't let taxes dictate your entire investment strategy. Talk with your financial advisor about tailoring your strategy for your specific needs.  

Be aware of wash-sale rules before selling and quickly repurchasing investments and remember that California generally taxes capital gains as ordinary income rather than offering the preferential state rates available for certain long-term gains federally. For Californians with significant investment income, reviewing gains before the end of the year can help prevent an unpleasant surprise at tax time. 

4. Finish Charitable Giving and Other Year-End Contributions 

If charitable giving is part of your plan, complete intended 2026 gifts before year-end rather than waiting until the last minute. Beginning in 2026, eligible taxpayers who don't itemize may qualify for a federal deduction for certain cash charitable contributions, up to $1,000 for individuals or $2,000 for married couples filing jointly. 

People making larger gifts may want to discuss strategies such as donating appreciated securities with their tax or financial advisor.  

This is also a good time to check your Flexible Spending Account (FSA) for maximum allowable contributions. Make sure you know if you must “spend it or lose it” before the end of the year.  

If you have an Healthcare Savings Account (HSA), remember that California doesn't generally follow the federal tax treatment of HSAs, so California residents may have additional state tax and recordkeeping considerations. 

5. Look Beyond Taxes

Good year-end planning is not just about reducing taxes. Take a few minutes to review the rest of your financial life. Is your emergency fund still sufficient? Are you carrying high-interest credit card debt? Do your insurance policies provide enough protection? Are the beneficiaries on your retirement and life insurance accounts current? 

Finally, calculate your approximate net worth: 

Assets − Debts = Net Worth 

Save the number somewhere. Comparing your net worth once a year can provide a much clearer picture of financial progress than watching your investments every day. 

Your Simple Q4 Checklist

October: Review

☐ Estimate total 2026 income 

☐ Check federal and California tax withholdings 

☐ Review retirement contributions and employer match 

☐ Check investment gains and losses 

☐ Review FSA/HSA balances 

☐ Check your emergency savings 

November: Decide

☐ Determine whether to increase retirement contributions 

☐ Consider year-end investment tax planning 

☐ Plan charitable contributions 

☐ Review 2027 employee benefits 

☐ Review insurance and beneficiaries 

☐ Identify large expenses coming in early 2027 

December: Execute

☐ Complete time-sensitive retirement contributions 

☐ Complete intended investment transactions 

☐ Make intended charitable gifts 

☐ Use applicable FSA funds before their deadline 

☐ Update beneficiaries if needed 

☐ Organize your tax records 

☐ Calculate your year-end net worth 

☐ Set three financial priorities for 2027 

If You Only Do Five Things...

If you're short on time, focus here: 

1. Run a year-end tax estimate.

Know whether you're likely to owe before April. 

2. Check your retirement contributions.

Make sure you're receiving your intended employer match and contributing enough to reach your goals. 

3. Review investment gains and losses.

Identify potential tax issues while there's still time to act. 

4. Complete anything with a December 31 deadline.

Don't discover an opportunity in January that expired in December. 

5. Set your 2027 savings plan.

Decide what you'll save, invest, and contribute to retirement before your first paycheck arrives. 

Finish the Year with a Plan

Year-end financial planning doesn't need to be complicated. 

Think of Q4 this way: 

October: Review. 

November: Decide. 

December: Act. 

A few hours spent reviewing your taxes, retirement accounts, investments, savings, and financial goals now can make tax season easier and give you a much clearer start in the new year. 

This article is for general educational purposes and isn't individualized tax, investment, legal, or financial advice. Federal and California tax rules can differ, and your individual circumstances may change which strategies are appropriate.

This commentary reflects the personal opinions, viewpoints and analyses of the Lightcap Financial Group, LLC employees providing such comments, and should not be regarded as a description of advisory services provided by Lightcap Financial Group, LLC or performance returns of any Lightcap Financial Group, LLC client. The views reflected in the commentary are subject to change at any time without notice. Nothing in this commentary constitutes investment advice, performance data or any recommendation that any particular security, portfolio of securities, transaction or investment strategy is suitable for any specific person. Any mention of a particular security and related performance data is not a recommendation to buy or sell that security. Lightcap Financial Group, LLC manages its clients’ accounts using a variety of investment techniques and strategies, which are not necessarily discussed in the commentary. Investments in securities involve the risk of loss. Past performance is no guarantee of future results.