SBTEXMEDIA
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Trackers & Dashboards ✦ Calculators ✦ Data Validation ✦ Protected Formulas ✦ PivotTable Reporting
"A spreadsheet only one person understands is not an asset. It is a liability with a notice period."
SBTEXMEDIA designs professional Excel templates for businesses that depend on a spreadsheet and cannot afford it to break. Led by Bayazid Kajol, founder of SBTEXMEDIA, this service covers project and inventory trackers, budgets, invoices, quote and pricing calculators, KPI dashboards, reporting workbooks and the repair of inherited spreadsheets nobody fully understands any more.
The defining characteristic of a business spreadsheet is that it will be used by people who did not build it. That single fact should drive every design decision, and it almost never does. Most workbooks are built by one capable person for their own use, then handed to colleagues who type text into a number column, insert a row that falls outside the formula range, overwrite a calculation with a hard-coded figure, or drag a cell and quietly break twelve references. None of these are user error — they are design failures.
A properly built template makes those mistakes difficult. Structured tables expand automatically so formulas always cover new rows. Data validation restricts input to what the column actually accepts. Formula layers are locked and protected so users can only edit the cells intended for them. Named ranges replace fragile cell references. And the reporting layer is driven by PivotTables that refresh rather than being rebuilt by hand each month. Where the data originates in a form, I can wire the whole chain from Google Forms or Microsoft Forms through to the finished dashboard.
Spreadsheet errors do not announce themselves. They produce a number that looks perfectly plausible.
The dangerous thing about a spreadsheet mistake is that it fails quietly. A broken formula does not crash anything — it returns a figure that looks entirely reasonable, and that figure goes into a quote, a report or a board pack. Nobody questions it because there is nothing visibly wrong. Spreadsheet error research has consistently found that a large majority of business workbooks contain at least one material error, and the reason is not incompetence. It is that spreadsheets give you no warning when they are wrong.
The most common cause is simply that formulas do not cover the data. Someone inserts a row inside a range, or adds new records below where the SUM stops, and the total silently excludes them. This is entirely prevented by structured tables, which expand their formulas automatically — a feature built into Excel that most business workbooks still do not use.
Then there is the maintenance cost. Unprotected workbooks accumulate damage. A user overwrites a formula with a typed number because it was quicker that month, and from then on that cell never updates again. Someone sorts one column without the others and permanently scrambles every row. Somebody types "N/A" into a numeric field and every downstream calculation returns an error. Each fix takes someone an hour of forensic work, and the same thing happens again next quarter.
The reporting layer carries its own recurring cost. Without PivotTables, monthly reporting means someone manually filtering, copying and pasting figures into a summary tab — several hours every month, forever, with a fresh chance of transcription error each time. A PivotTable-driven dashboard reduces that to clicking refresh, and the time saved compounds for as long as the business uses the workbook.
Finally there is key-person risk, which is the one that genuinely damages businesses. A complex workbook built by one person, undocumented, with no consistent structure, becomes something nobody else dares touch. When that person leaves, the organisation is left with a critical process it cannot maintain, cannot audit and is frightened to change. Building for handover from the outset — clear structure, named ranges, documented assumptions — removes that risk entirely.
Six outcomes that separate an engineered workbook from a spreadsheet somebody grew.
If any of these describe your workbook, this is the service you are looking for.
Twelve-plus sectors, each with its own conventions on figures, margins, tax handling and reporting periods.
Spreadsheet work is where sector knowledge shows up fastest, because the formulas have to reflect how that industry actually calculates. Construction quoting handles materials, labour, wastage and retention differently from a consultancy day-rate model. Retail stock valuation, textile costing and clinical caseload tracking each carry their own conventions and their own definitions of a period. Knowing those before starting is what stops a workbook being technically correct and practically useless.
The same six steps on a simple tracker and a multi-tab reporting workbook.
The step that matters most here is testing with deliberately bad input. Every workbook works when you enter sensible data — that proves nothing. What matters is what happens when someone enters a negative quantity, leaves a required cell blank, types text into a number field or pastes a thousand rows at once. Those are the moments spreadsheets break in real offices, so those are the moments I engineer for.
Six reasons drawn from what returning clients say when I ask them why they came back.
Every Excel template project includes all of the following — none of it is an upsell.
The questions clients ask before sending me a workbook. For broader questions, see the main FAQ page.
Send me the workbook, or just describe what you need it to do. You'll get an honest assessment, a clear scope and a fixed quote — usually within a few hours, with no obligation attached.
"Let's turn your vision into something exceptional — together."
I respond within a few hours. Tell me what your workbook needs to do.