Compare calendar reviews, allocation thresholds and new-cash rebalancing. Work through fees and test a written crypto rule with transparent tools.
Category Archives: Calculator Guides
Follow fee, pricing, currency and purchase examples, then open the matching calculator with its formulas and limitations.
Crypto Portfolio Rebalancing Strategies: Calendar, Threshold and New Cash
Compare crypto rebalancing rules, execution timing, fees and drawdowns. Includes synthetic arithmetic and a reproducible historical example with free tools.
How much capital for $1,000 a month in dividends? Test the assumptions
Calculate an illustrative dividend-income goal, compare gross and net targets, and test a dividend cut without treating yield as a promise.
Mortgage recast vs extra principal: compare the same loan and horizon
A worked framework for comparing a mortgage recast with an extra principal payment, including fees, remaining balances and cash-flow differences.
Etsy order profit: reconcile shipping, tax and Offsite Ads
Reproduce a US Etsy order-margin example, separate collected tax from revenue, and compare attributed Offsite Ads costs with other selling expenses.
Margin vs Markup: How to Set a Target Selling Price
Work backwards from cost and a target margin, then check what happens when you discount the price.
DCA Average Price: A Worked Example With Purchase Fees
Follow an equal-budget purchase sequence and see why averaging the displayed prices gives the wrong answer.
Forex Profit in Pips, Lots and Account Currency
Work from executable entry and exit prices to quote-currency profit, then convert and subtract additional costs.
Stripe US Fees: From Gross Payment to Net Receipt
An example-based guide to standard online card fees and reverse calculations for a desired net amount.
Etsy US Profit After Fees, Shipping and Offsite Ads
Separate customer tax, seller revenue, platform charges and fulfilment costs when estimating one order.