Starting January 1, 2026, 401(k) catch-up contributions go in as Roth, not pretax, for anyone whose 2025 Social Security wages from that employer passed $150,000. The test has sharp edges, and a few groups walk through it untouched.
The S election deadline passes quietly, and most owners only find out when the first S corporation return is being prepared and there is no acceptance letter in the file. Rev. Proc. 2013-30 fixes it retroactively, for free, if you follow its script exactly.
The IRS taxed your RSUs as wages at the vest-day price. The round trip back down is a capital loss you deduct at $3,000 a year, and a layoff usually means selling at the bottom. The asymmetry is fixable, but only in advance.
The $600 threshold that has decided who gets a 1099 since 1954 is gone. For payments made in 2026 the number is $2,000, but royalties, attorney proceeds, and your W-9 routine did not get the memo.
Company stock is down and the losses look harvestable, but an RSU holder has a problem no index-fund investor has: the next vest is an acquisition whether you want it or not, and on a monthly schedule it always lands inside the 30-day window.
The new roof goes on the depreciation schedule for 27.5 years. The old roof can come off the return as a loss this year, plus the tear-off costs, but only if you claim it on the original return for the year the roof came off the building.
The employee home office deduction died in 2018 and the OBBBA buried it for good, and an S corp owner is an employee of their own corporation. The accountable plan is the one door still open: the corporation reimburses your actual home office costs, deducts them, and none of it touches your W-2.
The IRS opened electronic filing of Form 15620 in July 2025, so an 83(b) election is now a portal session instead of a certified-mail ritual. The 30-day deadline did not move, the copy to your company is still required, and a few quirks of the online form can still burn founders.
Contributions to Trump accounts opened July 4, 2026, and new IRC §128 lets your corporation put $2,500 a year into your child's account without touching your taxable income. Here is the part nobody hands you: the written plan, the borrowed dependent care tests, and the FICA asterisk.
Wages you pay your own child for real work are deductible at your marginal rate and taxed to the child at theirs, which in 2026 means a rate of zero on the first $16,100. Run the payroll through the right entity and Social Security, Medicare, and FUTA tax disappear too. The catch is that the Tax Court has been grading these arrangements since 1967, and it publishes the rubric.
The $24,500 deferral cap gets all the attention, but the ceiling that matters for the mega backdoor Roth is the §415(c) annual additions limit, $72,000 for 2026. The gap between that number and what you and your employer already put in is after-tax space you can convert to Roth, if your plan document has two specific features.
New Jersey does not charge you a tax for leaving. It makes nonresident sellers prepay estimated income tax before the deed can be recorded, at 10.75% of the gain or 2% of the full sale price, whichever is more. The money is real, the refund is real too, and most sellers never learn the difference.