Capital Gains, FIRPTA & Withholding: The Tax Side of Selling in Newport Beach

Closing Costs and Taxes Are Two Different Conversations

When sellers ask "what does it cost to sell my house," they're almost always asking about closing costs: commissions, escrow and title fees, transfer tax, and the repairs or credits that come out of the transaction itself. Those are real numbers, and if you want a full breakdown of them for a Newport Beach sale, that's covered in Cost to Sell a Home in Newport Beach.

But there's a second conversation that gets skipped far too often, and it can matter more to your bottom line than any line item on the closing statement: what does the IRS, and California, actually do with the proceeds of your sale? Closing costs reduce what you walk away with at the table. Taxes are a separate calculation that happens after the sale closes, and for longtime Newport Beach and Coastal Orange County owners sitting on decades of appreciation, it's the calculation that deserves the most attention.

This is where my background as a CPA and MBA comes in more than it does on a typical listing. Most agents can walk you through commissions and escrow fees. Far fewer can walk you through basis, the Section 121 exclusion, or why California withholds money from your proceeds that you may never actually owe. I spent years in finance before real estate, and I still think in those terms when I sit down with a seller. This article is the tax side of that conversation.

Note: this is general information, not personalized tax advice. Every seller's basis, ownership history, and filing situation is different, and you should confirm your specific numbers with a CPA or tax attorney before you sell.

The Capital Gains Exclusion Under IRC Section 121

The single biggest tax break available to most home sellers is the primary residence capital gains exclusion under Internal Revenue Code Section 121. It's also the most misunderstood, because in a market like Newport Beach and Corona del Mar, where homes purchased in the 1980s and 1990s have appreciated well beyond the exclusion limits, the gap between "excluded" and "taxable" gain can be substantial.

The $250,000 / $500,000 Exclusion

If you sell your primary residence and meet the ownership and use tests below, you can exclude up to $250,000 of gain from federal capital gains tax if you file as a single taxpayer, or up to $500,000 if you're married filing jointly. This exclusion can be used repeatedly over your lifetime, as long as you meet the requirements each time, but not more often than once every two years.

What trips people up is that these limits were set in 1997 and have never been adjusted for inflation. A couple who bought a Newport Heights home for $180,000 in 1985 and sells it today for well over $2 million can easily have gain far in excess of $500,000. The exclusion doesn't disappear in that case, it just doesn't cover the whole gain. The excess is taxed as a long-term capital gain, generally at the federal rate that applies based on your total taxable income (0%, 15%, or 20%, plus the 3.8% Net Investment Income Tax for higher earners), plus California state tax, which taxes capital gains as ordinary income with no separate lower rate.

The Ownership and Use Tests

To qualify for the exclusion, you generally need to meet both of these over the five years ending on the date of sale:

• Ownership test: You owned the home for at least two years.
• Use test: You lived in it as your primary residence for at least two years (the two years don't need to be continuous, and they don't need to be the same two years as the ownership test, though they usually overlap).

There are partial exclusions available for sellers who don't meet the full two-year tests due to a job change, health issue, or other unforeseeable circumstance, and special rules for surviving spouses, divorced spouses, and homes that were converted from a rental. These situations come up often with the downsizing and life-transition sales I work on, and they're exactly the kind of detail worth reviewing with a tax professional before you list.

What Counts as Gain, and How Basis Reduces It

Gain isn't simply your sale price minus your original purchase price. It's your sale price minus your adjusted basis, and adjusted basis is where a lot of legitimately excludable gain gets left on the table because sellers don't track it.

Your adjusted basis generally starts with your original purchase price and closing costs, then adds the cost of capital improvements made over the years, things like a kitchen remodel, a new roof, room additions, or major system replacements (not routine repairs or maintenance). It's then reduced by items like depreciation claimed if any part of the home was rented out. For an owner who's been in a Newport Beach home for twenty or thirty years, a well-documented history of capital improvements can meaningfully shrink taxable gain, sometimes by hundreds of thousands of dollars. If you have receipts, permits, or even old contractor invoices for major work done on the home, gather them before you sell. This is exactly the kind of documentation a CPA-minded review catches that a purely transactional approach to a listing tends to miss.

California's Withholding Rule: FTB Form 593

Separate from the actual tax you may or may not owe, California requires escrow to withhold a percentage of the sale proceeds at closing and remit it to the Franchise Tax Board, unless you qualify for an exemption. This is reported and elected on FTB Form 593, Real Estate Withholding Statement, and it catches a lot of sellers off guard because it happens automatically at closing, before your actual tax liability is even calculated.

When Withholding Applies

Withholding generally applies to the sale of California real estate unless the seller certifies an exemption on Form 593, most commonly that the property was the seller's principal residence, that the sale results in a loss for tax purposes, or that the seller is exempt for another qualifying reason under FTB rules. Most sellers who lived in their home as a primary residence and qualify for the Section 121 exclusion will also qualify for a full withholding exemption, but the exemption isn't automatic. It has to be properly certified through escrow at the time of sale.

How Much Gets Withheld

When withholding does apply and no exemption is certified, escrow withholds 3.33% of the total sale price, or the seller can elect an alternative withholding calculation based on estimated gain, whichever is lower, subject to FTB rules. On a multi-million-dollar Newport Beach or Corona del Mar sale, 3.33% of the gross price is a significant amount of cash held back at closing, even when the seller's actual tax bill will end up much smaller, or zero.

Getting It Back If You Don't Owe

If withholding was taken and it turns out you don't owe that much (or anything, thanks to the Section 121 exclusion or basis adjustments) it isn't gone. It's treated as an estimated tax payment credited against your California tax liability for that year. You recover any excess by filing your California tax return and claiming the withholding as a credit, the same way you'd claim withholding from a paycheck. The catch is timing: that money is tied up from closing until you file your return the following year, which is exactly why getting the exemption certified correctly at the time of sale, rather than waiting to claim it back later, matters so much.

FIRPTA Withholding for Foreign Sellers

A related but separate withholding regime applies when the seller is a non-resident alien or otherwise a "foreign person" for tax purposes, under the Foreign Investment in Real Property Tax Act, or FIRPTA. This comes up more often than people expect in Coastal Orange County, where a meaningful share of high-end property has been owned by foreign nationals or held through foreign-owned entities.

Who FIRPTA Applies To

FIRPTA requires the buyer (not the seller) to withhold a percentage of the sale price and remit it to the IRS whenever the seller is a foreign person, unless an exemption applies. It's a federal rule, separate from and in addition to California's Form 593 withholding, and both can apply to the same sale. The buyer's title or escrow company typically handles the mechanics, but it's the seller's residency status that triggers it, so this needs to be identified early in the transaction, not discovered at the closing table.

The Withholding Rate and Exceptions

The standard FIRPTA withholding rate is 15% of the gross sale price, though reduced rates can apply in certain circumstances, such as when the buyer intends to use the property as a residence and the price falls under specific thresholds. As with Form 593, FIRPTA withholding is an advance payment against the seller's actual U.S. tax liability, not a final tax. A foreign seller can apply for a withholding certificate from the IRS in advance of closing to reduce the amount withheld if the actual tax owed will be less than the standard withholding, though this requires lead time and coordination with a qualified tax professional well before the sale closes.

Why the Tax Side Deserves Its Own Conversation

It's worth being explicit about the difference here, because these three posts on our site cover genuinely different ground and I don't want anyone confusing them. What closing costs actually are and what they add up to in dollars for a Newport Beach sale both deal with money that moves at the closing table as part of the transaction itself: commissions, escrow and title fees, transfer tax, prorated items, and any negotiated credits or repairs. Every seller pays those, and they're calculated the same way regardless of how long you've owned the home or what you paid for it.

The tax side is different. It isn't a transaction cost, it's a function of your gain, your basis, your residency history, and your filing status, and it's calculated by a completely separate set of rules than the closing statement. Two neighbors selling identical houses on the same street for the same price can have very different tax outcomes depending on when they bought, what they've put into the home, and how they've used it. That's not something a standard closing cost worksheet will ever capture, and it's exactly the layer of the sale where a CPA background changes the conversation.

Why Talk to Someone Who Actually Thinks in These Terms

I built my career before real estate as a CPA and hold an MBA, and I still approach every listing with that lens. Most agents can tell you what commission and escrow fees will look like. Far fewer can sit down with you and talk through adjusted basis, whether your capital improvements are documented well enough to reduce taxable gain, whether you'll need to certify a Form 593 exemption, or how FIRPTA might apply if you're selling on behalf of a trust with foreign beneficiaries.

None of this replaces your CPA or tax attorney, and it shouldn't. But it does mean that when we talk about listing your Newport Beach or Coastal Orange County home, the tax side of the sale is part of the strategy conversation from day one, not an afterthought you discover in escrow. If you've owned your home for decades, made significant improvements over the years, or have a more complex ownership or residency situation, the earlier we talk about this, the more options you have.

Bottom Line

Selling your home involves two very different sets of numbers: the closing costs that come out of your proceeds at the table, and the tax consequences that follow afterward. The Section 121 exclusion can shelter a large share, or all, of your gain if you plan for it. California's Form 593 withholding is a cash-flow issue you can often avoid altogether with the right exemption certified up front. And FIRPTA is a federal rule that foreign sellers, and the agents and title companies working with them, need to identify early rather than late.

If you're thinking about selling in Newport Beach, Corona del Mar, or anywhere in Coastal Orange County and want to talk through what the tax side of your specific sale might look like, reach out. It's a conversation worth having before you list, not after.