How to Use ChatGPT for Work: Emails, Excel, Reports, Research and Job Search

Which ChatGPT plan do you need for work?

Most people can start on the Free plan. Upgrade only when you keep hitting limits on uploads, research or memory. Here is what OpenAI’s pricing page showed for India when we checked in September 2026.

Plan	Price shown (India)	What it adds	Suits
Free	₹0 / month	Unlimited text chats (subject to abuse guardrails); limited uploads, image generation, voice, deep research and memory	Trying it out, occasional emails and summaries
Go	₹399 / month	More messages with tools, more uploads, more image creation, longer memory; may include ads	Daily users who work with files
Plus	₹1,999 / month	Advanced reasoning models, expanded deep research, projects, scheduled tasks and custom GPTs	Heavy research, analysis and writing work
Pro	From ₹10,699 / month	5x more usage than Plus and maximum research and memory	Very heavy research or coding use
Business / Enterprise	See the vendor’s pricing page	Admin controls; OpenAI says it does not train on workspace content by default	Companies rolling it out to teams

If your company already pays for a workspace plan, use that account for work. It keeps work data under your employer’s policies, not your personal settings.

What is the best way to ask ChatGPT for work tasks?

Use the same four-part method for every task:

1. Context: who you are, who the output is for and why. “I am a sales coordinator writing to a distributor in Nagpur.”
2. Task: one clear action. “Draft a reply confirming the revised delivery date.”
3. Format: length, tone, structure. “Under 100 words, polite, bullet the three dates.”
4. Material: paste the email, notes or data it must use, and say “use only this”.

Then read the answer as if a new colleague wrote it. Fix what is wrong by saying exactly what to change. Our prompt engineering guide for beginners covers six more techniques with before-and-after examples.

How do you use ChatGPT to write work emails?

Emails are the easiest win. Paste your rough draft or bullet points and say what the email must achieve.

I am an accounts executive. Rewrite this email to a client whose
payment of Rs 1,85,000 is 20 days overdue. Tone: polite but firm.
Mention the invoice number and ask for a payment date by Friday.
Under 120 words. Do not threaten legal action.

My draft:
"Hi, payment still pending for INV-2291, pls clear asap."

Useful follow-ups: “Make it warmer”, “Shorter, for WhatsApp”, “Write a second reminder for 7 days later”. Always check names, amounts and dates against your records before you send.

Can ChatGPT write Excel formulas?

Yes, and it is one of the most useful work tasks, as long as you tell it exactly where your data sits and which Excel version you use. Here is a small sample sheet:

	A: Date	B: Region	C: Product	D: Sales (₹)
2	02-09-2026	North	Laptop	42,000
3	05-09-2026	South	Printer	35,500
4	09-09-2026	North	Printer	18,000
5	12-09-2026	West	Laptop	27,000
6	18-09-2026	North	Laptop	15,500
7	22-09-2026	South	Laptop	40,000

A good prompt:

I use Excel for Microsoft 365. Headers are in row 1: Date (A),
Region (B), Product (C), Sales (D). Data is in rows 2 to 7.
Give me formulas for:
1. Total sales for North
2. Total sales for North laptops only
3. Number of orders above 30,000
4. Average sale value for laptops
5. The product with the single largest sale
Explain each formula in one line.

The formulas you should get back, with the result each one returns on the sample data:

1. =SUMIFS(D2:D7, B2:B7, "North")                   -> 75500
2. =SUMIFS(D2:D7, B2:B7, "North", C2:C7, "Laptop")  -> 57500
3. =COUNTIF(D2:D7, ">30000")                        -> 3
4. =AVERAGEIFS(D2:D7, C2:C7, "Laptop")              -> 31125
5. =XLOOKUP(MAX(D2:D7), D2:D7, C2:C7)               -> Laptop

Check them by hand on a few rows before trusting them on 20,000. North is 42,000 + 18,000 + 15,500 = 75,500. North laptops are 42,000 + 15,500 = 57,500. Three sales exceed 30,000. The four laptop sales total 1,24,500, an average of 31,125. XLOOKUP works in Excel 2021, Excel 2024 and Excel for Microsoft 365, but Microsoft notes it is not available in Excel 2016 or 2019; on those versions, ask for an INDEX/MATCH version instead.

How do you use ChatGPT to write reports?

Do not ask ChatGPT to “write a report on Q2 sales” from nothing. It will fill gaps with generic text. Give it your numbers and notes, and ask for structure first.

I am preparing a monthly operations report for our regional head.
Step 1: Propose a structure with 5 headings for a 1-page report.
Do not write the report yet.

[after you approve the structure]
Step 2: Write the report using ONLY the data and notes below.
Where data is missing, write [DATA NEEDED] instead of guessing.
After the report, list every number you used and where it came from.

<data>
[paste summary table and notes]
</data>

The “list every number” step makes checking fast. If a number in the report is not in your list, it came from the model, not from you, and you should remove it.

Can you use ChatGPT for research at work?

Yes, with care. Use its search or deep research feature so it cites web pages, then open the important sources yourself. Language models can produce answers that sound confident but are false; OpenAI’s own research calls these hallucinations and says they remain a challenge for all large language models.

• Ask for sources with links, and prefer official pages, regulators and company filings.
• Ask “What would change this conclusion?” to surface weak points.
• For anything legal, tax or medical, use ChatGPT to prepare questions, then confirm with a qualified person or the official source.
• Note the date. Prices, rules and product features change often.

How can ChatGPT help with a job search?

It is useful for tailoring and practice, not for inventing a profile.

• Match your resume to a job description: “List the skills and keywords in this JD that my resume does not show. Do not add experience I don’t have.”
• Rewrite bullets: “Rewrite as action plus result. Keep only numbers I have given.”
• Mock interviews: “Interview me for a business analyst role. One question at a time, feedback after each answer.”
• Research an employer: ask what to look for in the company’s annual report or careers page, then read them yourself.

Recruiters can spot generic AI text quickly. Your own examples and projects matter more. See AI projects for your resume for ideas you can build and show.

What should you never paste into ChatGPT at work?

Check your employer’s AI policy first. Some companies block public AI tools; others provide a Business or Enterprise workspace. For personal accounts, these rules are a safe default.

Do	Don’t
Remove names, phone numbers and emails before pasting	Paste Aadhaar, PAN, bank details or salary sheets
Replace client names with “Client A”	Paste unreleased financials, contracts or board papers
Use your company’s approved workspace for work data	Paste source code or passwords your company has not cleared
Turn off model training if you use a personal account	Assume a deleted chat was never stored

Two settings are worth knowing, based on OpenAI’s Data controls help page:

• Improve the model for everyone: in Settings → Data controls. When it is off, your new conversations are not used to train OpenAI’s models. They still appear in your chat history.
• Temporary chat: these chats do not appear in history, do not update memory and are not used to train models, but may be kept for up to 30 days for safety purposes.

One catch: OpenAI says that if you give feedback such as a thumbs up or down, the whole conversation may be used for training even after you opt out.

What are ChatGPT’s limits, and how do you check its output?

ChatGPT is a drafting and thinking partner, not a source of truth. Before anything leaves your desk, run this five-point check:

1. Facts: is every name, date and figure in your source material or a source you opened?
2. Maths: recalculate totals and percentages, or test formulas on a few rows.
3. Links: click every link. Models sometimes produce links that do not exist.
4. Tone: would you say this to the reader in person?
5. Confidentiality: does the output reveal anything it should not?

Other limits to keep in mind: it may not know about very recent events unless it searches, it can lose track of details in very long chats, and the same prompt can give a different answer each time. Starting a fresh chat for a new task often helps.

What comes after using ChatGPT well?

Once you use ChatGPT daily, the next step is to stop repeating the same prompts by hand. That means connecting AI to your tools with automations (for example, drafting a reply every time a form is submitted) or building a small bot that answers from your team’s documents. Our guides to AI automation projects for beginners and AI agents explain how.

The ISS AI & Agentic Systems program covers this path over 16 weeks, at about 12–14 hours a week, from prompting and research with citations to workflow automations, RAG pipelines and agents. The fee is ₹69,999, or ₹66,499 if paid upfront.

Frequently Asked Questions

Is ChatGPT free to use for work?

Yes. The Free plan costs nothing and includes unlimited text chats subject to abuse guardrails, with limits on uploads, research and memory. In September 2026, OpenAI showed Go at ₹399 a month and Plus at ₹1,999 a month for India. Check your employer policy before using a personal account for work.

Is it safe to paste company data into ChatGPT?

Only if your company allows it. On a personal account, remove personal and confidential details, and consider turning off Improve the model for everyone in Data controls. OpenAI says it does not train on Business or Enterprise workspace content by default.

Can ChatGPT write correct Excel formulas?

Usually, if you give it the exact cell ranges, headers and Excel version. Always test a new formula on a few rows you can calculate by hand before using it on the full sheet.

Can my employer see what I type into ChatGPT?

On a personal account, your chats are tied to your own login. On a company Business or Enterprise workspace, your organisation may have retention, compliance and access settings, so assume work chats follow company policy.

How do I stop ChatGPT from making things up?

You cannot stop it fully, but you can reduce it. Ask it to use only the material you provide, allow it to say information is missing, ask for sources and open them, and check every number before you use it.

Sources and methodology

• OpenAI, ChatGPT pricing: plan names, prices shown in rupees for India, plan features. Checked September 2026.
• OpenAI Help Center, Data controls in ChatGPT: model training setting, temporary chat retention, feedback, managed workspaces. Checked September 2026.
• OpenAI, Why language models hallucinate (5 September 2025). Checked September 2026.
• Microsoft Support, XLOOKUP function: which Excel versions include it. Checked September 2026.
• ISS program details come from our program page and fees page.

Method: prices are as displayed on OpenAI’s pricing page when viewed from India; they may exclude taxes and can change at any time. The prompts, sample spreadsheet and checklists were written by the ISS Editorial Team; formula results were checked by hand against the sample data shown.

Next steps

Pick one task you did this week, such as an email, a report or a spreadsheet, and redo it with the four-part method. Then download the free AI Projects Starter Kit on this page for project ideas that go beyond single chats.

If you want live teaching and feedback on building automations and agents, read the AI & Agentic Systems curriculum. You can apply for free and pay only after you accept an offer. ISS does not guarantee jobs or placement.