You will get a custom Excel calculation model, reconciled to your source
Top Rated
Project details
If a number in your spreadsheet is wrong, you usually find out from someone else. This is built so that does not happen.
I build calculation models in Excel or Google Sheets - pricing and margin models, payroll and tax calculators, commission plans, quoting tools, capacity and cash models. Whatever the numbers are, they get reconciled against a source you name: a published rate table, a supplier price list, a contract, a regulation.
Every deliverable ships with a reconciliation log: one row per figure, naming the source, the page and the date it was checked. You do not have to trust me - you can pick any row and check it yourself.
Recent build, as a standard of reference: a US federal payroll withholding engine. 9 tabs, 912 formulas, reproducing 4,350 figures published by the IRS to the dollar, with a 4,375-line substantiation log. I can show it to you.
I use AI tooling in the build, and I say so plainly because Upwork requires it and because it is why the price is fixed and the log exists. Nothing goes out that has not been checked against something published.
No calls needed. Describe what you need in writing and you get a price and a date the same day.
I build calculation models in Excel or Google Sheets - pricing and margin models, payroll and tax calculators, commission plans, quoting tools, capacity and cash models. Whatever the numbers are, they get reconciled against a source you name: a published rate table, a supplier price list, a contract, a regulation.
Every deliverable ships with a reconciliation log: one row per figure, naming the source, the page and the date it was checked. You do not have to trust me - you can pick any row and check it yourself.
Recent build, as a standard of reference: a US federal payroll withholding engine. 9 tabs, 912 formulas, reproducing 4,350 figures published by the IRS to the dollar, with a 4,375-line substantiation log. I can show it to you.
I use AI tooling in the build, and I say so plainly because Upwork requires it and because it is why the price is fixed and the log exists. Nothing goes out that has not been checked against something published.
No calls needed. Describe what you need in writing and you get a price and a date the same day.
Target Country
WorldwideWhat's included
| Service Tiers |
Starter
$110
|
Standard
$395
|
Advanced
$1,020
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Spreadsheet |
Frequently asked questions
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About Telmo
Excel Models & Spreadsheet Audits | European Portuguese QA & Testing
98%
Job Success
Portimao, Portugal - 12:55 am local time
CALCULATION SPREADSHEETS AND MODELS
Pricing models. Payroll and tax calculators. Commission and margin models. Monthly reporting packs. Operational models that have to reconcile against a published source, not against a guess.
What makes my work different is the verification. Every figure in what I deliver is reconciled line by line against the source you give me, and you receive the reconciliation log with the file. You do not have to trust me — you can check the work.
Most recent build: a US federal payroll withholding engine in Excel. 9 tabs, 912 formulas, reproducing 4,350 figures published by the IRS in Publication 15-T to the dollar, with a 4,375-line substantiation log naming the source, page and date of every number. I can send it to you.
EUROPEAN PORTUGUESE (PT-PT) QA, PROOFREADING AND TESTING
This is what I am doing right now, on ongoing contracts: linguistic QA and proofreading of PT deliverables, localization testing, and manual payment-function testing on mobile builds. Native PT-PT and near-native English, translation both ways.
Top Rated, 98% Job Success, 617 hours and 25 contracts on Upwork since 2019.
HOW I WORK
· Fixed price and a fixed delivery date, quoted the same day you describe the job
· Everything is asynchronous — no calls needed, and I answer messages within a few hours
· I use AI tooling in the build. That is exactly why every figure is reconciled against your source and why you get the log — it is what lets me quote a fixed price on work that would otherwise take a week
· Unlimited revisions within scope for 14 days after delivery
One thing I will always be straight about: I do not give tax, legal or financial advice. I build the calculation exactly as the source you name specifies, and show you the reconciliation so your own advisor can check it in minutes instead of hours.
Tell me what you need and you will have a price and a date the same day.
Steps for completing your project
After purchasing the project, send requirements so Telmo can start the project.
Delivery time starts when Telmo receives requirements from you.
Telmo works on your project following the steps below.
Revisions may occur after the delivery date.
You send me the file and the source
The current file if one exists, what the output has to show, and the source the numbers must match. If you only have the second, send that and I will tell you what else I need.
I confirm the scope in writing, before starting
A short written spec: every tab, every input, every output, and what gets reconciled against what. You approve it first. Nothing outside it becomes a surprise later.