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Small business decision guides

A calculator gives you a number. These guides cover what the number means, what the model leaves out, and what to do when the answer is not the one you wanted — which is the part that actually decides anything.

Written and reviewed by Aniruddha Biswas for Silver Shine LLC. Last reviewed: July 26, 2026.

All guides

11 min read · Reviewed July 26, 2026

How much should a small business spend on marketing, and where should it go?

Answers: What should my marketing budget be, and how do I divide it?

Setting a budget is the easy half. This covers what the number has to satisfy, how to split it between keeping and growing, and when to change it.

In this guide

  • The two tests a marketing budget must pass
  • Split the budget before you allocate it
  • Allocating the growth budget by payback speed
  • Annual number, monthly reality
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Uses

13 min read · Reviewed July 26, 2026

Google Ads, SEO, or email: how to compare marketing channels honestly

Answers: Which marketing channel deserves the next dollar?

The three channels produce ROI numbers that are not comparable. Here is how to put them on the same footing, and what each one is actually good at.

In this guide

  • Why the three ROI figures are not comparable
  • Putting the channels on the same footing
  • A worked comparison
  • What each channel is actually good at
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Uses

12 min read · Reviewed July 26, 2026

What a small business website costs, and how to buy one without overpaying

Answers: What should I budget for a website, and how do I judge the quotes?

Why quotes for the same brief differ by a factor of five, what is always missing from them, and how to write a scope that makes vendors comparable.

In this guide

  • What actually drives the price
  • What almost every quote excludes
  • DIY, freelancer, or agency
  • First-year cost versus the three-year cost
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Uses

14 min read · Reviewed July 26, 2026

Pricing, margin, break-even and revenue goals: the four numbers that decide whether a business works

Answers: Is my pricing sound, and what target should I actually be working towards?

Four numbers that are usually treated separately and only make sense together. Includes why record revenue can coincide with an empty bank account.

In this guide

  • Start with margin, not revenue
  • Why record revenue can coincide with an empty bank account
  • Markup is not margin, and the confusion is expensive
  • Break-even, and why it is a capacity question
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Uses

10 min read · Reviewed July 26, 2026

How to choose AI tools for a small business without wasting money on them

Answers: Should I adopt an AI tool, and how do I choose one without wasting the money?

Start from a task you repeat, not from a product. Covers the data question most owners skip and how to tell whether a tool actually saved you anything.

In this guide

  • Start from a task you repeat, not a tool you saw
  • Settle the data question before anything else
  • What to evaluate, in order of importance
  • Keep the human review step
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Uses

How these guides are written

What you will and will not find here

Every guide is written and reviewed by Aniruddha Biswas for Silver Shine LLC, and carries a real reviewed date.

You will not find industry benchmarks, survey figures, or "average" market rates on this site. We do not collect that data, and we will not repeat numbers we cannot stand behind. Where a guide uses figures, they are illustrative arithmetic built on formulas and assumptions we publish in full.

There are no affiliate links, sponsored placements, or vendor recommendations anywhere in these guides.

Every formula, published

The methodology page documents each calculator's inputs, formula, assumptions, exclusions, and limits — including every planning value we supply ourselves.

Read the methodology

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