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Practical guides, how-tos and comparisons to get the most out of our free online tools.

April 16, 2026
Explainer · Property

A Construction Loan Is Not a Mortgage

Funds arrive in stages and interest accrues only on what has been drawn. On a $400,000 facility at 8.5 percent over twelve months, that is $18,062.50 rather than the $34,000 the headline rate implies — 53.13 percent of it.

Camille Laurent · 13 min read

Explainer · Property

What a Housing Voucher Actually Pays

The tenant's share is a percentage of adjusted income; the subsidy is the gap up to a payment standard. On $29,040 of adjusted income the tenant pays $726 and the agency pays $774 — and a 40 percent gate decides whether the lease is allowed at all.

Camille Laurent · 16 min read

Comparison · Business

Stripe vs PayPal Fees: What Each One Actually Takes

On a $100 domestic card sale the gap is $0.78. On the same sale from abroad with a currency conversion it is $2.78. The headline rate is the part that matters least.

Camille Laurent · 7 min read

April 15, 2026
Explainer · Property

UK Stamp Duty Is a Slice Tax, Not a Slab Tax

Only the part of the price inside each band is taxed at that band's rate. On £450,000 that is £12,500 in England, £18,350 in Scotland and £14,250 in Wales — three separate taxes, and the old slab system's £5,000 cliff edges are gone.

Camille Laurent · 14 min read

Explainer · Business

How Amazon FBA Fees Work: Every Layer on a $25 Sale

A $25 unit does not cost 15 percent to sell. Referral, fulfilment, fuel surcharge, storage and returns stack to $8.14 — 32.6 percent of the price — before you have paid for the product.

Camille Laurent · 7 min read

Comparison · Motoring

Car Lease vs Buy: Which Costs Less Over Time?

Leasing means lower monthly payments and endless flexibility; buying costs more up front but leaves you owning an asset. Here is how the total cost really compares.

Marco Bianchi · 4 min read

April 14, 2026
Explainer · Property

Parking Ratios and the Arithmetic Behind a Car Park

A ratio of 4 spaces per 1,000 sq ft puts 200 spaces on a 50,000 sq ft office — and 51,000 sq ft of asphalt, more land than the building itself. The ratio is a policy choice, not a measurement.

Camille Laurent · 13 min read

How-to · Property

How Much Storage Space Do You Need?

You are sold floor area and you use volume. A 10 by 10 unit is 800 cubic feet gross but 595 usable, and a one-bedroom home itemised piece by piece comes to 635.75 packed — so the unit advertised for it only just holds it.

Camille Laurent · 13 min read

Comparison · Property

Comparing Two Mortgage Offers Properly

The rate is not the comparison. Over a five-year holding period the 6.25 percent offer with $2,000 of fees beats the 5.875 percent offer with $12,000 by $2,485.73; the crossover falls at month 80, not at the month 103 the simple payback suggests.

Camille Laurent · 13 min read

Explainer · Property

The Most Rent You Should Agree To

Three different numbers decide a letting: the rent the agent screens, the total occupancy cost your budget has to survive, and the cash due at signing. On a $1,800 listing they are $1,800, $2,095 and $3,600.

Camille Laurent · 13 min read

April 13, 2026
Explainer · Finance

College Costs Compound for Eighteen Years Before Anyone Enrols

A four-year public in-state budget is 30,990 dollars today. Eighteen years out at 4 percent cost inflation the same four years cost 266,593 — 2.15 times the sticker you can see now. And the sticker was never the price: the average net cost of attendance is 21,340.

Lena Hoffmann · 14 min read

How-to · Everyday

How to Keep the Same Mouse Sensitivity Across Games

Every game uses a different sensitivity scale. Convert with the yaw ratio, verify with centimetres per 360 degrees, and keep the muscle memory you spent months building.

Daniel Okonkwo · 4 min read