Last-Minute Tax Moves to Consider Before April 15

By Bob Moses | Altum Wealth Alliance

Tax season has a special talent for showing up at the exact moment work gets busy, travel gets scheduled, and someone in the family decides March is the perfect month for a surprise life event. Plenty of successful families and business owners feel the same pressure: the numbers matter, the clock is loud, and the mental bandwidth is limited.

Relief is available, even in the final stretch. A handful of smart, legal, last-minute moves can potentially reduce taxes, strengthen a plan, and remove some of that uneasy “Did we miss something?” feeling.

Important note: the ideas below are educational and general in nature. Tax rules vary widely by situation, and the right move depends on income, filing status, entity structure, state rules, and many other factors. A CPA or tax attorney should weigh in before taking action.

1) Maximize IRA contributions while the window is still open

Many people forget that IRA contributions for the prior tax year can often be made up until the tax filing deadline. Traditional IRA contributions may be deductible depending on income and retirement plan coverage. Roth IRA contributions have income limits, and eligibility can phase out at higher income levels.

High earners sometimes assume IRA options are off the table. A nondeductible IRA contribution may still be possible, and a Roth conversion strategy may be on the table in some circumstances. Careful coordination matters here, especially when other pre-tax IRA assets exist, since pro rata rules can affect outcomes.

A quick win often comes from simply confirming: contribution made, coded correctly for the intended tax year, and properly documented.

2) Consider an HSA contribution if eligible

Health Savings Accounts can be remarkably tax efficient when used properly. Eligibility generally requires enrollment in a qualifying high-deductible health plan, and contribution limits apply. Contributions may reduce taxable income, growth can potentially be tax-deferred, and qualified medical withdrawals can be tax-free.

Plenty of busy professionals treat the HSA like a “nice to have” account. A more strategic approach often treats it like a long-term planning tool, especially when current cash flow can cover medical expenses out of pocket and receipts are tracked.

Documentation matters. Recordkeeping and substantiation should be treated as part of the strategy, not an afterthought.

3) Confirm retirement plan contributions for business owners

Business owners have powerful levers, though timing and plan design determine what is still possible before filing. Options may include SEP IRA contributions, employer contributions to certain qualified plans, and in some cases contributions tied to an extension.

Plan rules, compensation definitions, and deadlines vary. A quick conversation with the plan administrator and tax professional can clarify what remains available and what paperwork is required.

A surprising number of business owners leave money on the table simply because the mechanics feel tedious. Busy schedules should not be the reason a valuable deduction gets missed.

4) Review withholding and estimated payments to avoid unpleasant surprises

Tax surprises rarely feel good. Avoiding them often requires proactive attention to withholding and estimated payments. Bonuses, RSUs, capital gains, pass-through income, and a strong year in a business can all shift the tax picture.

A simple withholding checkup can reduce the risk of underpayment penalties and the frustration of writing a large check at filing. Payroll withholding changes can often be made quickly. Estimated payments may still be relevant depending on timing and circumstances.

A clean process starts with a question: has income changed meaningfully since last year? If the answer is yes, the default assumption should be that withholding might need attention too.

5) Harvest tax losses with care

Tax-loss harvesting can potentially offset capital gains and, to a limited extent, ordinary income. This strategy requires selling an investment at a loss and using that loss under current rules. A wash sale can disallow the loss if a “substantially identical” security is purchased within the restricted window.

Markets can move quickly, and harvesting losses in a down position may create a meaningful tax asset. The move still needs to fit the investment plan. Selling solely for taxes can backfire if it disrupts risk exposure, triggers unwanted concentration, or creates reinvestment regret.

Coordination between the investment team and tax team is essential. A well-executed harvest aligns taxes and portfolio discipline rather than pitting them against each other.

6) Make charitable gifts in a tax-smart way before filing

Charitable giving often lives in the heart first, and it should. Tax efficiency can also matter, especially for families who give consistently and want to do it thoughtfully.

Gifting appreciated securities, rather than cash, can be a powerful approach in the right circumstances. The charity receives the value, and capital gains tax may be avoided on the appreciation, subject to rules and limitations.

Families who itemize deductions may see more direct tax benefit from charitable deductions. Families taking the standard deduction can still give, though the deduction impact may be different. A “bunching” strategy can sometimes help, where multiple years of giving are combined into one year to potentially exceed the standard deduction threshold. Donor-advised funds are often used for this approach, though each situation is different.

Charitable recordkeeping is not optional. Receipts, acknowledgments, and proper documentation protect the deduction.

7) Confirm required minimum distributions and retirement withdrawals

Required minimum distributions, when applicable, carry strict rules and potential penalties if missed. Timing issues can arise when accounts are consolidated, inherited accounts are involved, or a custodian change happened during the year.

A quick review of retirement withdrawals can also help identify tax planning opportunities. Additional withholding can sometimes be applied to distributions, which may simplify estimated payment management.

This step is not glamorous, though peace of mind tends to feel glamorous when a penalty is avoided.

8) Check eligibility for Qualified Charitable Distributions

Qualified Charitable Distributions, when available, can allow certain individuals to give directly from an IRA to a qualifying charity. This can be especially attractive for taxpayers who do not itemize deductions and still want a tax-efficient giving method.

Rules and age requirements apply, and the distribution needs to be completed correctly. Proper coordination with the custodian and the charity is critical.

This strategy sits at the intersection of generosity and good planning. Plenty of families appreciate that combination.

9) Organize documents to reduce errors and improve outcomes

Tax planning is not only a strategy. Execution matters just as much.

A clean file of documents can reduce mistakes and reduce the time a CPA spends tracking down details. Common missing items include K-1s, brokerage consolidated 1099s, charitable acknowledgments, medical receipts for HSA substantiation, and business expense summaries.

A simple checklist can help: income documents, deductions, business items, investment activity, and life changes. Life changes deserve special attention, since marriage, divorce, relocation, a home purchase, a sale of a business interest, or the loss of a loved one can change the entire filing picture.

10) Consider an extension as a planning tool, not a failure

Extensions get an unfair reputation. An extension is not an audit flag by itself. An extension can be a thoughtful move when documents are incomplete, complex transactions occurred, or additional planning is warranted.

An extension does not extend the time to pay taxes owed. Estimated tax still needs to be handled appropriately. Plenty of high-income households use extensions for practical reasons, including the timing of K-1s and complex reporting.

A calm, accurate return often beats a rushed return. The goal is a clean filing and a clean plan.

A practical “final stretch” approach that fits real life

A time-strapped household does not need ten new tasks. A focused approach often works better:

First, confirm what can still be done by the filing deadline and what requires an extension.

Second, prioritize moves with the biggest impact. Retirement contributions, HSA contributions, charitable strategy, and withholding checks often rise to the top.

Third, coordinate. A CPA, financial advisor, and investment team working from the same picture can prevent well-intended actions from colliding.

Tax planning is rarely about perfection. A good plan aims for clarity, fewer surprises, and decisions that align with the life being built.

Compliance and disclosure notes

“Altum Wealth Alliance is a member of Fiduciary Alliance, a Securities and Exchange Commission registered investment advisor”.