Personal finance, taken slowly
Nobody is born knowing how money works. So we start at zero.
The Long Runway is a small reading room for people who have never invested anything and are tired of being told it is obvious. We explain the ideas in the order they actually matter, we show the arithmetic instead of hiding it, and we stop before telling you what to buy.
If a page here uses a word you do not know, that is our mistake, not yours.
Most money decisions are made at a kitchen table, not on a trading floor.
The path
Three steps, in this order
Almost every beginner starts at step three, panics, and gives up. The first two steps are less exciting and they are what makes the third one survivable.
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Get your footing
Know what comes in and what leaves
Before funds, before markets, before any of it: work out what you actually spend in a normal month, then build a cushion that covers a broken car and a lost month of work.
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Learn the one idea
Understand what time does to money
Compound growth is the only part of investing you cannot buy, borrow or rush. Once you have seen the curve drawn out, the rest of the subject gets much smaller.
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Then begin
Put the first money to work
Only now do accounts, funds and risk levels become worth reading about. And when they do, the vocabulary is small enough to learn in an afternoon.
The guides
Long reads that finish the thought
Each guide answers one question completely, defines every term it uses, and says out loud where the honest uncertainty is.
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Foundations
Compound interest, explained without the formula
Why the same monthly amount is worth so much more when it starts earlier, shown as a table instead of an equation.
9 minute read
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Foundations
Saving and investing are two different jobs
One job is to keep money available and boring. The other is to let it move. Confusing them is the most common beginner mistake.
8 minute read
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Habits
How to build an emergency fund from scratch
How big it should be, where to keep it, and what counts as a real emergency once you have one.
8 minute read
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Markets
Stock market basics: what you are actually buying
A share is a slice of a company, not a lottery ticket with a moving number. Everything else follows from that one sentence.
8 minute read
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Markets
Index funds and mutual funds, side by side
What the two words really describe, why the fee difference matters more than it looks, and where the categories overlap.
8 minute read
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Risk
How much risk can you actually live with
Risk tolerance is not a personality quiz. It is the size of the fall you can watch without selling at the bottom.
8 minute read
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Building
Debt, equity or grants: what founders give up
A plain guide to debt, equity and grants for young companies, how much to raise, what dilution costs the founder, and where public programmes fit.
7 minute read
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Building
Commissioning a website: brief, check, pay
How a small business prepares a brief, compares written offers, checks a delivered website before paying, and keeps ownership of domain and files.
5 minute read
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Foundations
Reading a service contract clause by clause
A plain guide to reading a service contract before signing: the clauses that fix scope, payment and termination, and how changes are agreed later.
6 minute read
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Building
Old houses, real costs, and the seasons
What a buyer checks in an older house before an offer, which documents arrive first, and how winter, spring and fall change what a house really costs.
6 minute read
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Risk
How a civil case moves, from filing to appeal
A plain walk through a civil case in the Mississippi courts: filing, discovery, deadlines, trial and appeal, with the cost that sits at each step.
6 minute read
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Income
Carrying a career across borders
How professionals document experience, portfolios, freelance rates and remote work when a career moves between countries, with the arithmetic shown.
6 minute read
Why we keep saying start early
One number does most of the arguing
Put aside 100 a month for thirty years and stop. Assume a flat 6 percent a year, compounded monthly, and change nothing else. Here is what the arithmetic gives back.
Thirty years of 100 a month
- What you put in $36,000
- What growth adds $64,450
- Balance after 30 years $100,450
Arithmetic only, at a steady 6 percent a year compounded monthly, rounded to the nearest fifty. Real returns are never steady, they arrive out of order, and inflation quietly takes a share of the result. The exact figure is not the point. The shape of the curve is. See how it is worked out.
Short answers
Questions people ask before they trust anyone
Direct answers first, then the reasoning underneath. Read one in two minutes, or keep going.
- How much money do I need to start investing? Far less than most people assume. The real minimum is set by your safety net, not by the account.
- What is dollar cost averaging, in plain words? Buying the same amount on the same day every month, so you stop trying to guess the right moment.
- What percentage of my income should I save? The useful answer is the largest number you can keep up for two years without resenting it.
- How much should I save before investing anything? Enough to survive a broken car and a lost month of work without having to sell.
How this is written
Slow on purpose
We publish a small number of pages and keep rewriting them. A guide goes up when every term inside it has been defined somewhere on this site, and it gets revisited when the explanation stops being the clearest one we can give.
Three rules hold the whole thing together. Show the arithmetic so a reader can check it. Say plainly where the honest uncertainty sits. Never let a sentence stand in for a recommendation, because we do not know your situation and pretending otherwise would be worthless to you.
Kept on the desk
The desk's permanent reading order
These five pages stay on the desk because they carry the reading order, definitions, working arithmetic and first decisions the rest of The Long Runway depends on. We reread them whenever a term, figure or explanation elsewhere changes.
- Start at zero: the reading order A three-step route from knowing where your money goes to making a first investment, with each decision placed before the next one needs it.
- The words, defined once The plain-English reference for compounding, yield, liquidity, drawdown and every other money term used across this reading room.
- Find the cost of a normal month Three workable ways to track spending, sort irregular costs and arrive at the number every later saving decision rests on.
- See what time does to the same $100 A worked explanation of compound growth that keeps the arithmetic visible and separates the curve from any promise of a steady return.
- Size the cushion before investing A short answer for turning essential monthly spending into a cash buffer, including a two-stage version for anyone beginning with nothing saved.
Elsewhere
Other desks on the same subjects
Independent pages that cover ground this site also covers, kept here because they explain the arithmetic, the rules and the documents in plain language for readers starting from zero.
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Small business
The Vale Ledger
For anyone weighing a first venture in a rural county, a test business idea, launching, start-up guide covers the checks before registering, the legal form a very small business takes, and what the first year of trading costs.
Denbighshire and the Vale of Clwyd
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Community finance
The District Ledger
For a plain explanation of how community development works in practice, how affordable housing projects are financed, and what a CDFI is, Community development resources at The District Ledger describe the mechanisms in plain English, with a Washington DC focus.
Washington DC
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Health bills
The Billing Desk
For readers who want to check a detailed hospital bill before paying it, a guide at detailed hospital bill walks through itemised charges, CPT codes, duplicate entries, and the federal rules that let patients dispute errors first.
United States
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Due diligence
The Diligence Review
A reader who wants to know what a background check on a company covers can find plain explanations of due diligence before a deal, from ownership records and reputation checks to fraud tracing and digital evidence.
Corporate investigations
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Income
Revenu a Vie
For French savers who want to turn a monthly budget into lasting income, this French-language blog walks through emergency funds, listed funds and property, and the arithmetic behind building complementary income step by step.
France
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Mortgages
Soluzione Home
For readers who want to understand how a mortgage is prepared in Italy, from the documents in the file to what a lender checks and the costs paid beyond the price, this Italian guide to mortgage lending walks through each step before signing.
Italy
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Company growth
Action Strategies
For founders and owners of Canadian small and medium businesses, the guidance at growing a small business covers B2B pricing, margins, a first senior hire, and succession, with the operational and financial detail behind each step.
Canada