IRS problems aren't as complicated as they look once you see the structure. I'm attorney Darrin Mish. I've represented taxpayers before the IRS for three decades — in Florida, Colorado, Texas, and internationally. Here's the plain-English breakdown.
I'm Darrin Mish. Tampa tax attorney, 32 years in, more than $100 million in IRS debt resolved. That's my resolution practice. What follows is the other side of the desk – the planning moves that keep you from ever needing it.
Most taxpayers wait until January to think about taxes. By then, your planning window closed three weeks earlier. Financial and tax planning works when you build it into quarterly decisions, not scramble at year-end. The difference isn't subtle. Clients who plan save thousands; those who file without planning pay full freight.
Your CPA files returns. That's compliance. Planning is the work you do before the tax year closes – choosing entities, timing income, funding retirement, positioning deductions. The IRS publishes year-round tax planning tips because reactive filing costs taxpayers money they could have kept.
Why Financial and Tax Planning Happens Before December
Tax planning isn't a December project. Most elections, contribution limits, and timing strategies lock in during the year. Miss the quarterly estimated payment? You're paying penalties. Skip the retirement contribution deadline? You lost that deduction.
The common pattern: business owners meet their CPA in March, hand over a shoebox, and hear "you should have told me about this last year." No malice. Just physics. Most tax-saving moves require time the calendar already burned.
Year-round financial and tax planning covers these windows:
- Q1 (January–March): Prior-year retirement contributions (through April 15 for individuals, through filing deadline plus extensions for businesses), first-quarter estimated payments, reviewing last year's return for missed deductions
- Q2 (April–June): Mid-year income projections, adjusting withholding or estimated payments, entity structure review for growing businesses
- Q3 (July–September): Retirement plan setup deadlines (September 30 for solo 401(k) plans if you want current-year contributions), estimated payment true-up, charitable giving strategy
- Q4 (October–December): Final income/deduction timing, retirement contribution execution, capital gains/losses harvesting, required minimum distributions
One quarter missed is one planning lever you don't pull. The IRS Tax Time Guide updates annually, but the rhythm stays constant.
The Five Planning Categories That Move Your Tax Bill
Financial and tax planning collapses into five buckets. Income timing. Deduction timing. Retirement contributions. Entity structure. Credits and incentives. Everything else is detail.
Income and Deduction Timing
You control when income hits your return more than you think. Business owners especially. Bill a client December 28 or January 2? Different tax years. Take a bonus this year or next? Your call, if you negotiate it.
Deductions mirror the same control. Prepay January rent in December? Deductible this year under cash-method accounting. Wait two days? Next year's return. The IRS doesn't care which you choose. It cares that you're consistent and that the expense is ordinary and necessary.
Timing strategies that high earners use:
| Strategy | Mechanism | Best For |
|---|---|---|
| Defer income to next year | Delay billing, postpone bonuses, push asset sales into January | High-income year followed by expected lower-income year |
| Accelerate deductions into current year | Prepay expenses, make estimated state tax payments (if deductible), bunch charitable gifts | High-income year where you need offsets now |
| Bunch itemized deductions | Alternate years: itemize one year (double donations, prepay property tax), take standard deduction the next | Taxpayers near the standard deduction threshold ($29,200 married filing jointly in 2026) |
The wrinkle: state tax rules don't always match federal timing. Some states have different fiscal years, accrual requirements, or conformity gaps. The Tax Foundation tracks major state tax changes annually. Know your state's rules before you execute a timing play.
Retirement Contributions as Tax Arbitrage
Retirement accounts let you deduct money now, invest it tax-deferred, and pull it out later at potentially lower rates. That's arbitrage. You're trading today's marginal rate (say, 35%) for tomorrow's effective rate in retirement (maybe 18%).
The math works if you retire into a lower bracket. It works even better if tax rates drop between now and retirement. It falls apart if you retire into the same bracket and rates rise. Nobody knows. You guess and hedge.
Contribution limits for 2026 (projected, adjusted for inflation):
| Account Type | Contribution Limit | Catch-Up (Age 50+) | Deadline |
|---|---|---|---|
| 401(k) / 403(b) | $23,500 | $7,500 | December 31 |
| Traditional IRA | $7,000 | $1,000 | April 15, 2027 |
| SEP IRA | 25% of compensation, max $69,000 | None | Business filing deadline + extensions |
| Solo 401(k) | $23,500 employee + 25% employer, max $69,000 total | $7,500 | December 31 for employee; business deadline for employer |
Business owners often miss the solo 401(k) because it requires entity election by September 30 (for calendar-year filers) but lets you fund it through your business return deadline. That's often October 15 if you extend. More time, bigger contribution, better deduction.
Entity Structure and Self-Employment Tax
Sole proprietors pay 15.3% self-employment tax on net profit. S corporation owners pay it only on W-2 wages, not distributions. That's the entire game. Choose S corp status, pay yourself a reasonable salary, take the rest as distributions. Save 15.3% on the distribution portion.
Reasonable salary is the trap. The IRS doesn't publish a formula. It wants "what you'd pay someone else to do your job." Pay yourself $30,000 and distribute $200,000? Audit risk. Pay $120,000 and distribute $110,000? Reasonable for most professional services. The case law (mostly Tax Court) sets the boundaries.
Entity structure decision matrix:
| Entity | Self-Employment Tax | Compliance Cost | Best For |
|---|---|---|---|
| Sole proprietor (Schedule C) | 15.3% on all profit | Minimal | Income under $60,000/year; simple services |
| Single-member LLC (default) | 15.3% on all profit | Minimal | Liability protection with simplicity |
| S corporation | 15.3% on salary only | Moderate (payroll, separate return) | Profit over $60,000/year; ability to justify salary/distribution split |
| C corporation | No SE tax, but double taxation on distributions | High | Retaining earnings; complex equity structures |
The S election requires Form 2553, filed by March 15 (for calendar-year entities) or within 2 months and 15 days of formation. Miss it, wait until next year. One client missed the deadline by six days. Cost him $14,000 in self-employment tax he could have avoided.
Credits, Deductions, and Itemization Strategy
The standard deduction ($29,200 married filing jointly in 2026) wipes out itemization for most taxpayers. You need mortgage interest, state taxes (capped at $10,000), and charitable donations to clear that bar. If you're close, bunch deductions into alternating years.
Bunching works like this: Year one, donate $20,000, prepay property taxes, maximize mortgage interest. Itemize. Year two, donate nothing, pay taxes as due. Take the standard deduction. Two-year total beats itemizing both years at lower amounts.
Donor-advised funds make bunching easy. Contribute three years of donations in one year, get the full deduction now, grant to charities over the next three years. Charity Navigator offers donor guidance and tax calculators to model the benefit.
Business tax credits get more complex. Research and development credit, work opportunity tax credit, energy credits. Most require documentation contemporaneous with the expense. You can't recreate R&D logs in March. Track as you go or lose the credit.
Education and Estate Tax Planning
Education funding and estate planning sit at the edge of financial and tax planning because they're long-term plays. You're trading current control for future tax efficiency.
529 plans let you fund education with after-tax money, grow it tax-free, and withdraw it tax-free for qualified education expenses. The federal tax benefit is growth and withdrawal. Some states add a deduction for contributions. The College Board’s 529 guide covers the mechanics.
Estate planning touches taxes when your estate exceeds the federal exemption ($13.61 million per person in 2026, scheduled to drop to roughly $7 million in 2026 under current law unless extended). Below that, you're planning for probate, control, and state estate taxes (12 states have them). Above it, you're planning to move assets out of your estate before death.
Gifting during life uses your annual exclusion ($18,000 per recipient in 2026) and your lifetime exemption. AARP’s estate planning guide walks through wills, powers of attorney, and beneficiary designations alongside the tax side.
How High Earners and Business Owners Plan Differently
High earners (households over $400,000) and business owners face marginal rates at 35% or 37%. Every deduction is worth more. Every timing mistake costs more. The planning gets sharper.
High-income financial and tax planning moves:
- Maximizing pre-tax retirement contributions to pull income out of the 37% bracket now and into a 24% bracket in retirement
- Timing capital gains to stay under the 3.8% net investment income tax threshold ($250,000 married filing jointly)
- Using qualified small business stock (QSBS) exclusion to eliminate federal tax on up to $10 million of gain (if the stock qualifies under Section 1202)
- Bunching charitable deductions to clear the standard deduction threshold in alternating years
- Roth conversions during low-income years to pay tax at 24% now instead of 35% later
Charles Schwab’s guide for high-income earners covers bracket management and timing strategies in more depth. The core idea: you're not minimizing tax this year. You're minimizing tax over your lifetime.
Business owners add entity-level planning. Choosing fiscal years, timing equipment purchases for Section 179 expensing, managing inventory accounting methods, setting up retirement plans for employees. The Small Business Administration provides guidance on recordkeeping and tax obligations that compliance-focused CPAs sometimes skip.
One construction client saved $38,000 in 2025 by accelerating a $200,000 equipment purchase into December (instead of January) and using bonus depreciation. Same equipment, same economics, different tax year. That's planning.
Transition Planning for Retirement and Wealth Transfer
Retirement isn't an event. It's a decade-long tax transition. You move from wage income (taxed as ordinary) to retirement withdrawals (taxed based on account type) to Social Security (taxed up to 85%) to required minimum distributions (forced ordinary income starting at age 73 under current law).
The planning question: how do you fill the gap between retirement and Social Security (age 62–67) without spiking your tax bracket? Most retirees pull from taxable accounts first, then tax-deferred (traditional IRA/401(k)), then Roth accounts. That's the default. It's usually wrong.
Better sequence (for many retirees):
- Years 60–73: Live on taxable accounts and Roth conversions (convert traditional IRA dollars to Roth at low rates while income is low)
- Years 73+: Required minimum distributions kick in (forced ordinary income), so you're pulling from tax-deferred accounts anyway
- Throughout: Delay Social Security to age 70 if you can (benefit increases 8% per year from full retirement age to 70, plus you avoid taxation during low-income years)
Fidelity’s guide to retirement transition taxes covers Roth conversions, timing, and RMD planning in detail. The strategy requires cash reserves to live on while you convert. No reserves, no conversion window.
Wealth transfer planning overlaps. Gifting assets during retirement pulls them (and future appreciation) out of your estate. The annual exclusion ($18,000 per recipient in 2026) lets you move $72,000 per year to two children tax-free (you and spouse each gift $18,000 to each child). Over 20 years, that's $1.44 million out of your estate with zero gift tax.
What Most CPAs Miss in Financial and Tax Planning
Compliance CPAs are trained to file accurate returns. They're not trained to question entity structure, model Roth conversions, or time income across tax years. No criticism. It's a different skill set.
The gaps appear in three places. First, entity choice. A CPA will file your Schedule C. They won't tell you an S corp saves $12,000 a year unless you ask. Second, retirement account selection. They'll record your contribution. They won't model whether traditional or Roth makes sense given your expected retirement bracket. Third, multi-year strategy. They optimize this year's return. They don't model the next decade.
Financial and tax planning requires projection, assumptions, and guesswork. What will tax rates be in 2040? What will your income be in retirement? When will you sell the business? Nobody knows. You make educated guesses and adjust.
The best planning happens when your CPA, financial advisor, and attorney talk to each other. The CPA sees historical income. The advisor projects retirement income. The attorney structures entities and estate documents. Each has a piece. Nobody has the whole picture unless you force coordination.
Building Your Year-Round Planning Process
Start with quarterly check-ins. Not quarterly tax prep. Quarterly projection updates. Four questions:
- What's my projected taxable income for the year? (Update as revenue and expenses come in)
- Am I paying enough estimated tax to avoid penalties? (Safe harbor: 100% of last year's tax or 90% of this year's)
- What planning moves are still available this year? (Retirement contributions, entity elections, timing decisions)
- What changed since last quarter? (New business, marriage, home purchase, inheritance)
Answer those four, you're ahead of 80% of taxpayers. You're not scrambling in December. You're executing a plan you built in March and refined in June and September.
Track planning opportunities in a simple spreadsheet or project management tool. Taxt formalizes this into a five-step process: assess, project, plan, execute, review. Most taxpayers skip "plan" and "execute" entirely. They assess (gather documents), project (guess what they owe), and review (file the return). Planning happens in between projection and execution.
Your planning checklist by quarter:
- Q1: Review prior-year return for missed deductions or planning opportunities; make prior-year retirement contributions if eligible; adjust withholding based on last year's result
- Q2: Project current-year income and tax; confirm estimated payments are on track; review entity structure if profit is growing
- Q3: Finalize retirement plan setup (if you're adding a solo 401(k) or SEP); true-up estimated payments; begin charitable giving strategy
- Q4: Execute year-end timing moves (income deferral, deduction acceleration); maximize retirement contributions; harvest capital losses; confirm RMDs are satisfied
Miss Q1, you still have three quarters. Miss Q3, you have one. Miss Q4, wait until next year. The calendar is unforgiving.
Financial and tax planning isn't a once-a-year scramble. It's a rhythm you build into quarterly decisions, entity structure, and long-term wealth strategy. The taxpayers who save thousands are the ones who plan before the year closes, not after. Taxt specializes in exactly this work – the five-step planning process that turns reactive compliance into proactive tax savings for U.S. business owners and high earners. If you're tired of overpaying because your CPA only files returns, it's time to plan.
