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SkyZap Journal

Guides to the decisions behind the numbers

Long-form, practitioner-written explanations of the money, business and technical decisions our tools help you model. No filler, no affiliate padding.

Developer

Article Schema: Every Property That Matters and Why

Article markup is the most widely implemented structured data type and among the most frequently incomplete. Here is what each property...

June 11, 20263 min read
Business

Should You Take a Shorter Loan Term? Run the Cash Flow First

Given a choice between a three-year and a five-year loan at the same rate, the arithmetic says take the three-year: less total interest,...

June 4, 20263 min read
Business

How to Raise Your Freelance Rates Without Losing Clients

Rates do not raise themselves, and inflation lowers them continuously. A rate unchanged for three years has fallen roughly 10% to 15% in...

May 30, 20264 min read
Energy

Solar Loan vs Lease vs Cash: The Real Return on Each

The financing decision affects your return more than the equipment decision. Two households can install identical systems on identical...

May 27, 20263 min read
Business

The Rule of 40, Explained With Real Numbers

The Rule of 40 exists to answer one question: how do you compare a company growing fast and losing money against one growing slowly and...

May 21, 20263 min read
Finance

How to Read a Loan Estimate and Spot Inflated Closing Costs

The Loan Estimate is a standardised three-page form every US lender must give you within three business days of an application. Because...

May 19, 20263 min read
Developer

How Many Tokens Is a Word? A Practical Token Budgeting Guide

Every LLM cost estimate starts with a token count, and most token counts start with a guess. The guess is usually low, and the error...

May 15, 20263 min read
Business

Invoice Numbering: The System That Keeps Your Books Audit-Proof

Invoice numbering looks like a formatting preference. It is closer to a legal obligation, and it is one of the first things an auditor...

May 12, 20263 min read
Developer

Which Schema Types Still Earn Rich Results?

Google has retired or restricted several rich result types over recent years, and a good deal of advice online still recommends...

May 8, 20263 min read
Finance

Employer Life Insurance Isn't Enough: What the Gap Really Costs

Group life insurance through work is a genuine benefit and it is usually free. It is also, for most people with dependants, nowhere near...

May 6, 20263 min read
Energy

Should You Add a Battery to Your Solar System?

Battery storage is the most heavily promoted solar upgrade and, under the most common conditions, the one that most reduces your return....

April 29, 20263 min read
Business

SBA Loans vs Online Lenders: The Real Cost Comparison

The choice between an SBA loan and an online lender is really a choice about how much you are willing to pay for speed. The gap is larger...

April 24, 20263 min read