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The 401(k) catch-up rule now forces Roth contributions for higher earners. See exactly who it hits, what losing the deduction costs, and if it matters.

Small business AI adoption reached 68% and 98% of users reported no headcount change. Here is what firms actually gained, what failed, and the real math.

World models let robots rehearse in simulation before acting. See the 10x sample efficiency result, what NVIDIA just shipped, and where the approach breaks.

A replaceable phone battery is becoming an EU requirement in February. Here is what the rules demand, why 800 charge cycles matters, and what it saves you.

Hardware subscriptions put features you already paid for behind a monthly fee. See what Meta and carmakers now charge, and three checks to run before you buy.

Passkeys cannot be phished or stolen in a breach, and 75% of people have one. Here is how they work and why your recovery flow is now the weakest link.

Parlays hold 17.8% for sportsbooks against 5.1% on single bets. Here is the math behind that gap, and why the same stake costs you four times as much.

Tariffs reach most small businesses as unlabelled price increases. Here is how to find the cost on your own invoices and what to do once you have found it.

Mandatory hotel fees add 40% to 70% on top of the rate you were quoted. Here is the full math on a four-night stay, and which charges you can actually refuse.

Games hit $80 and consoles went up at the same time, which has never happened before. Here is what is driving it and what a full setup really costs you.

Fitness trackers average 67% accuracy. Heart rate holds up, calorie burn does not. Here is which numbers to trust and which one quietly costs you most.

Buy now pay later rarely helps your credit score and can quietly hurt it. Here is what BNPL does to your report, and the debt data behind the trend now.