Write Software Requirements Without Jargon

You do not need technical vocabulary to write excellent software requirements. You need plain sentences that each answer three questions: who wants something, what they want, and why. "As a dispatcher, I want to see which crews are free right now, so I can assign the emergency call without phoning around." A developer can build from that sentence. No jargon survives contact with it, because there is nowhere for jargon to hide. The owners who get the best software are consistently the ones who write like this, and the briefs that sink projects are consistently the ones dressed up in borrowed words like "module," "integration layer," and "portal" that neither side ever defined. This article is the method in full: the story format, the Tuesday morning test, and exactly what a good requirements document looks like when it lands on our desk before a first call.

The short version

Deciding what to build is the hard part of software, and it always has been. Fred Brooks wrote in 1986 that no other part of the work so cripples the result when done wrong, and nothing since has repealed that.
Jargon hides assumptions. Plain stories expose them. Every borrowed technical word in a brief is a place where you and the developer can politely agree while meaning different things.
The unit of a good requirement is one sentence: who, what, why. Not a feature name, not a screen sketch, a person accomplishing something for a reason.
The Tuesday morning test catches vague requirements before they cost money. If you cannot describe a specific person using the feature at 9 a.m. on an ordinary Tuesday, it is not a requirement yet. It is a wish.
Describe the problem, not the solution. You are the world expert on what your business needs. The developer is the expert on how to build it. Briefs fail when the two swap jobs.
A good requirements doc for a first call is three to five pages. Workflow, stories, exceptions, volumes, and a definition of done. No wireframes required, no technical sections at all.

Why is jargon the enemy of good requirements?

In 1986, Fred Brooks, the man who managed IBM's largest software project and then spent a career studying why software is hard, published the most cited essay in the field's history, No Silver Bullet. Its sharpest sentence is about you, the client, not about programmers: "The hardest single part of building a software system is deciding precisely what to build." No other part of the work, Brooks wrote, so cripples the resulting system if done wrong, and no other part is more difficult to fix later.

Sit with that for a second, because it inverts the way most owners walk into a software project. If deciding what to build is the hardest and most consequential part, then the person who understands the business is not the least qualified voice in the room. They are the most qualified, and the entire question is whether they can transmit what they know without it getting garbled in translation.

Jargon is where the garbling happens. When a non-technical owner writes "we need a CRM module integrated with our portal," three things go wrong at once. First, the owner is guessing at what those words mean, hoping they cover the need. Second, the developer maps each word onto their own private definition, which is guaranteed to differ. Third, and worst, the sentence sounds finished, so nobody questions it. Both sides nod. The document looks settled precisely where it is emptiest. We have sat on the developer side of that table and nodded at requirements we should have interrogated, because the vocabulary made them sound decided. Months later, the gap between the two private definitions surfaces as a dispute, and the paper trail shows everyone technically agreed.

Now compare: "When a customer calls, Rachel needs their full history on one screen before the second ring, because right now she searches three systems while the customer waits." No nod-along is possible. Either the developer understands Rachel's problem or they ask a question, and both outcomes move the project forward. Plain language does not merely tolerate scrutiny. It invites it, which is exactly what a requirement is for.

There is a second, quieter benefit. Jargon describes solutions, and solutions are the developer's job. When a brief says "portal," it has silently made an architecture decision. When it says "customers keep calling to ask where their order is," it leaves the builder free to propose the cheapest thing that solves it, which is sometimes a portal and sometimes a single automated text message costing a tenth as much. Describing problems buys you the developer's judgment. Describing solutions only buys their labor, and as Brooks also observed, clients asked to specify systems up front almost never can: the real requirements emerge from iteration between the person who knows the business and the person who knows the tools. Plain language is the medium that iteration runs on.

What is a plain-language user story?

The software industry converged decades ago on a sentence template that does exactly what a requirement must do, and it contains no technology whatsoever:

As a [person], I want [capability], so that [reason].

As the office manager, I want the system to flag invoices unpaid for 30 days, so that nobody has to remember to chase them.
As a field tech, I want to attach photos to a job from my phone, so that the office stops calling me to ask what I found.
As the owner, I want to see this week's booked revenue every Monday morning, so that I know whether to push sales before the month closes.

Three slots, and each one earns its place. The person slot forces reality: a named role, not "users." If you cannot say who, the feature has no customer inside your business and belongs in the parking lot. The capability slot stays in the language of the work: see, flag, attach, approve, never "integrate" or "sync" unless you truly mean a specific system talking to another specific system. The reason slot is the one people skip and the one that matters most, because it lets the builder judge whether a proposed solution actually solves anything, and it silently ranks the backlog. A story whose reason is "so we stop losing two hours a day" outranks one whose reason takes three sentences of throat-clearing.

Write twenty of these and something surprising happens: the vaguest parts of your own thinking become visible to you before any developer sees the document. The story format is not paperwork for the builder's benefit. It is a thinking tool that catches the fuzz early, while it is still free to fix, and it works for the same reason the process map works in documenting your workflow before building: both force the tidy version of the business to confront the real one.

One habit multiplies the value of every story: read it aloud to the person who actually holds the role in the sentence. If the dispatcher shrugs at the dispatcher story, the document is written for the wrong audience, however elegant it looks. The person doing the work should recognize their day in it immediately. That five-minute read-aloud is the cheapest requirements review that exists.

What is the "on a Tuesday morning" test?

Take any requirement you have written and try to pass it through one filter: describe a specific person using it at 9 a.m. on an ordinary Tuesday. Not at launch, not in a demo, on a boring workday with the phone ringing.

"The system should be user-friendly" dies instantly. Who is the user? Doing what? "Maria, who is 61 and hates computers, can create a work order in under a minute without asking anyone for help" survives, and notice it is now testable: on delivery day, you can literally sit Maria down and time her.

"We need reporting" dies. Which report, read by whom, to decide what? "Every Friday at 4 p.m., the owner opens one page showing jobs completed this week, jobs stuck, and money collected versus billed, and decides whether anyone needs to work Saturday" survives, and it just told the developer exactly which three numbers matter and when they must be fresh.

"It should handle our inventory" dies. "When a customer orders the last unit, the system stops selling it everywhere within a minute, because overselling is our number one complaint" survives.

The test works because vagueness in requirements is not a writing-style problem, it is deferred decision-making. Every phrase like "user-friendly," "robust," "seamless," and "flexible" is a decision you have postponed until it is expensive, silently delegated to whoever writes the code that day. The Tuesday morning test forces the decision back to the only person qualified to make it, while it still costs nothing. It is also the cheapest known vaccine against the disease we dissected in how scope creep kills software projects: most "new requirements" that surface mid-build were present all along, hiding inside an adjective.

The test has a useful side effect on scope. Requirements that keep failing it, that you genuinely cannot picture anyone using on a real Tuesday, are usually features you do not need yet. Strike them and the first phase gets smaller, cheaper, and faster, which is the entire art of a good first build, as we lay out in the idea to MVP first phase guide.

How do you write the requirements document, step by step?

Here is the sequence we recommend to every owner before they request a single quote. Budget two focused afternoons.

Write the one-paragraph problem statement. What hurts, who it hurts, what it costs in hours or errors or lost customers, in your own words. No feature names allowed yet. This paragraph is the north star every later decision gets checked against.
Walk the workflow and write it down. Follow one real order, job, or client through the business, step by step, exceptions included. If you have already done the mapping exercise from our process documentation article, this section is done.
Draft user stories for the new system. Who, what, why, one sentence each. Aim for ten to twenty-five. Pull the "who" list from the actual humans in the workflow: owner, office, field, customer.
Run every story through the Tuesday morning test. Rewrite the ones that fail. Delete the ones that keep failing. Be ruthless here; every story that survives is money.
Split the list into "first phase" and "later." The first phase is the smallest set of stories that would make the system worth using on day one. Everything else is explicitly labeled later, which prevents it from silently inflating the quote.
Write the exceptions and edge cases. The rush orders, the customer who pays differently, the return that skips the normal path. These are requirements, not footnotes, and naming them now is what makes quotes honest.
Add the numbers. How many users, orders per day, records to migrate, and where the data lives now. Builders scope in volumes; guessed volumes produce guessed prices.
Define done. One short list: "We will know this worked when..." Fewer hours on X, zero incidents of Y, Maria under a minute. This list is what you will test against at each milestone, and it keeps everyone honest, including us.
Read it aloud to the people in it. One pass with the team members whose roles appear in the stories. Every correction they make is a defect caught at the cheapest possible moment.

What does a good requirements document look like at our first call?

Owners sometimes apologize for their documents before sending them: "It is not very technical." That apology has things exactly backwards. Here is what we actually hope to receive, and it fits in three to five pages:

The problem paragraph. Plain words, real numbers where you have them.
The workflow. Numbered steps, exceptions included, warts left in.
Ten to twenty-five user stories, each one who-what-why, sorted into first phase and later.
The exception list, with rough frequencies.
The volumes. Users, transactions, existing data, current tools.
Definition of done. Three to five observable outcomes.
Constraints that are real. A hard deadline, a budget ceiling, a tool that must stay, a tool that must die.

Notice everything that is absent: no wireframes (helpful but optional), no database talk, no technology preferences, no attempt to sound like an engineer. When a document like this arrives, the first call skips forty minutes of decoding and goes straight to the interesting questions, and the quote that follows is built on your actual business rather than on our optimistic reconstruction of it. Frankly, a document like this also changes how seriously any good developer treats the project, because it signals a client who will make decisions crisply. It is the strongest possible opening move in the quoting process we describe in the questions to ask before accepting a build quote, and inside our own process it becomes the raw material for a fixed-price first phase, agreed before code, demonstrated at milestones, owned by you, exactly as laid out in how we build custom software step by step.

What should you leave out of a requirements document?

Restraint is half the craft, so here is the explicit not-list.

Leave out the technology choices. Database, framework, hosting, "should this be an app or a website": these are outputs of the requirements, not inputs. State the constraint behind any preference instead: "our techs have terrible cell coverage" matters; "build it in React Native" is a guess wearing confidence. If a builder cannot translate your constraints into technology choices and explain them back in plain language, that tells you something more important than any spec could.

Leave out solutions dressed as needs. "We need a dashboard" is a solution. "The owner cannot see this week's numbers without asking three people" is the need. Give builders needs and make them propose solutions; comparing those proposals is how you learn who actually listened.

Leave out the encyclopedia. A requirements doc is not a novel about your company. History, org charts, and strategy decks dilute the signal. If it does not change what gets built first, it can wait for a conversation.

Leave out fake precision. Do not specify button colors and field positions before phase one exists. Detail belongs where the risk is: exceptions, money paths, and volumes deserve precision; cosmetics do not, yet.

And a final honest note, in the spirit of Brooks: no document, however clean, will be complete. He argued it is essentially impossible for a client to fully specify a system before trying a version of it, and forty years of our industry has proven him right. That is not an argument against writing requirements. It is the argument for writing them in plain language, scoping a small first phase, and expecting the document to improve at every milestone as working software teaches both sides what the business actually needs. Write the three-page version, run the Tuesday test, read it to your team, and then send it to me. I will tell you on the first call what is clear, what is still fuzzy, and what the smallest honest first phase would cost.

Common pitfalls

The story format is simple, which is exactly why it is easy to fill in badly. Watch for these failure modes.

Circular reasons. A "so that" clause that just restates the capability ("so I can see the report") gives the builder nothing to weigh or rank, and quietly defeats the whole point of the third slot.
All happy path, no refusal. Twenty stories about things going right and none about the rejected quote, the cancelled order, or the wrong entry leaves the build with no plan for the day reality misbehaves.
Sign-off theater. A document waved through in a meeting nobody read closely produces false consensus, so the first genuine disagreement surfaces mid-build with a paper trail proving everyone "agreed."
The immortal spec. Treating the first draft as a contract to defend rather than a snapshot to improve turns every milestone correction into an argument about blame instead of the free learning it should be.

An owner sent a crisp twenty-five-story brief, all of it about the smooth path: quote created, quote sent, quote accepted. Nothing described editing a quote already sent, and revisions turned out to be nearly half the real volume. The gap stayed invisible until the demo, when the very first thing everyone reached for was changing a sent quote, and found nowhere to do it. One story about the unhappy path would have surfaced it on paper, while it was still free to fix.

FAQ

Do I need to write technical specifications before hiring a developer?

No. Technical specifications, meaning databases, frameworks, architectures, and hosting, are the developer's deliverable, produced from your requirements, not your homework before the first call. What you should bring is the plain-language package: the problem, the workflow, who-what-why user stories, exceptions, volumes, and a definition of done. A developer who demands technical specs from a non-technical owner before quoting is outsourcing their own job to the person least equipped to do it.

What is the user story format for software requirements?

One sentence with three slots: "As a [specific role], I want [capability in work language], so that [the reason it matters]." For example: "As a field tech, I want to attach photos to a job from my phone, so that the office stops calling to ask what I found." The role forces you to name a real user, the capability stays in business language, and the reason lets the builder judge and rank the work. Ten to twenty-five of these cover most small-business first phases.

How long should a requirements document be for a small business project?

Three to five pages is the sweet spot for a first-phase build: one problem paragraph, a numbered workflow with exceptions, the user stories split into now and later, volumes, and a short definition of done. Shorter usually means decisions are missing; much longer usually means solutions and history have crept in. The goal is a document a busy developer reads completely in twenty minutes and quotes honestly against.

What is the Tuesday morning test?

It is a filter for vague requirements: can you describe a specific person using the feature at 9 a.m. on an ordinary Tuesday, with the phone ringing? "The system should be user-friendly" fails; "Maria can create a work order in under a minute without help" passes, and is instantly testable on delivery day. Requirements that repeatedly fail the test are usually wishes rather than needs, and cutting them is how first phases get smaller and cheaper.

What if I get the requirements wrong anyway?

You will get some wrong, and the method absorbs that. Fred Brooks argued convincingly that no client can fully specify a system before using a version of it, which is why we scope small fixed-price phases and demonstrate working software at each milestone: every demo is a scheduled opportunity for the requirements to get smarter while changes are still cheap. The goal of a plain-language document is not perfection. It is making your assumptions visible enough to be corrected early, on paper, instead of late, in code.

How to Write Software Requirements Without Tech Jargon