Articles
Explanations, guides and things worth knowing — some next to a calculator, some standing entirely on their own.
Capital gains tax brackets for 2025 and 2026, and how the 3.8% NIIT stacks on top
Long-term capital gains are taxed on a completely different scale from your paycheck, and where you land on it depends on your ordinary income as much as the size of the gain itself. Here is exactly where the 2025 and 20...
14 September 2026 · David Williams
The SAVE plan is winding down — what that means for the borrowers still on it
The SAVE plan spent nearly two years blocked in court, with millions of borrowers parked in an interest-free forbearance...
14 September 2026 · Michael Johnson
HSA contribution limits for 2025 and 2026, and the eligibility rules that just changed too
The IRS raises the HSA contribution limit almost every year, and 2026 is no exception. What makes this year different is...
14 September 2026 · David WilliamsBrowse by category
All 18 sections, every tool organised by topic.
Most popular
What people use most right now.
More articles
Some explain a question behind a calculator: which number belongs where, which rule applies to you, what the answer means. Others stand on their own and have nothing to do with a calculator. Either way, the arithmetic itself stays on the calculator pages — an article only ever explains, it never computes.
Social Security COLA 2026: what the 2.8% raise actually means
The Social Security Administration announced a 2.8% cost-of-living adjustment for 2026 on October 24, 2025. It...
The 2026 gift tax annual exclusion, and how it fits with the lifetime exemption
Almost nobody who gives an ordinary gift ever owes gift tax, and the reason is two separate allowances stackin...
What a rate change does to your mortgage payment
Central banks move rates in quarter points, and lenders pass them on in steps that look small on paper. Here i...
Need a specific converter?
We add new tools every week. If you can't find what you need, send us a request and we'll build it.