Client: Karthik Subramaniam, 51, chartered accountant and financial literacy advocate, Chennai
Service: Copy Edit and Proofreading
Genre: Non-Fiction / Personal Finance / Financial Literacy
Book Title: Money is Not Maths: A Plain-Language Guide to Personal Finance for Every Indian Family
Total Editing Investment: Rs. 95,000
Timeline: 8 weeks
Outcome: Self-published on Amazon KDP India; reached number one in the Personal Finance subcategory within two weeks of launch; 6,400 copies sold in three months; adopted by two financial planning firms as client onboarding material; led to a corporate speaking engagement pipeline worth Rs. 12 lakhs in Karthik’s first year post-publication
The Background
Karthik Subramaniam had spent twenty-six years as a chartered accountant. He had filed thousands of tax returns, reviewed hundreds of balance sheets, and sat across the table from enough middle-class Indian families to understand a problem that nobody seemed to be solving: most people in India were not financially illiterate because they were not intelligent. They were financially anxious because everything written about personal finance was written by and for people who already understood it.
The books available were either textbook-dense with jargon or American in their context and examples, talking about 401(k)s and roth IRAs to readers who needed to understand PPF, ELSS, and Section 80C. Karthik had been explaining money to ordinary families in plain Tamil and plain English for his entire career. He decided to write the book he wished existed.
He wrote the manuscript in eleven months. At 52,000 words, it covered budgeting, debt, insurance, tax planning, investments, and retirement planning, all structured around the financial realities of an Indian salaried family earning between Rs. 6 lakhs and Rs. 25 lakhs per year. Every example used Indian salaries, Indian tax law, Indian products, and Indian market conditions. The writing was clear, direct, and refreshingly free of condescension.
When the manuscript was finished, Karthik’s view on editing was straightforward and, he would later admit, wrong: “I’m a chartered accountant. I’ve written professional reports my entire career. I know how to write clearly. I don’t need someone to fix my grammar.”
His daughter, who was doing her MBA in Bengaluru and had read the manuscript, disagreed. She sent him the link to Write Right’s website and told him to at least have a conversation before he decided.
The Discovery Call: Shifting the Frame
Our initial conversation with Karthik was one of the most direct we have had with a prospective client. He was not hostile to editing & was unconvinced of its value in his specific case. Also, he had written clearly. He knew his subject and had his facts right. What, he wanted to know, would an editor actually do to a manuscript that was already professionally written?
We asked him to share the first three chapters for a complimentary sample review. He agreed, and we had observations back to him within forty-eight hours.
The sample review did not find grammar errors. Karthik was right about that. What it found was something more specific and more consequential for a personal finance book aimed at general readers.
Issue 1: Consistency of complexity across chapters.
The first three chapters were pitched perfectly for a reader with no financial background. Chapter four, on tax planning, had shifted register without warning. Terms like HRA exemption calculation, perquisite valuation, and Form 16 reconciliation were introduced without definition, assuming a level of existing knowledge that the book’s stated audience did not have. A reader who had followed comfortably through the first three chapters would hit chapter four and feel, suddenly, that this was not the book they had started reading.
Issue 2: Inconsistent treatment of numbers.
In a book about money, number consistency is not a minor stylistic concern. It is credibility. Karthik had used a mix of lakh, lacs, and lakhs throughout the manuscript. Percentage figures were presented inconsistently: sometimes as numerals (8%), sometimes written out (eight percent), sometimes as “eight per cent.” Interest rate examples used different compounding assumptions in different chapters without flagging the difference. None of these were factual errors. All of them were the kind of inconsistency that makes a financially literate reader distrust the author’s rigour, and makes a financially anxious reader feel confused when they should feel reassured.
Issue 3: Forty-one instances of passive voice in the first three chapters.
Karthik’s professional writing background had trained him to write in the institutional register of formal reports. In a book explicitly designed to feel like a trusted friend explaining money at the kitchen table, institutional passive voice was working directly against his stated goal. “It is advisable to maintain an emergency fund of six months’ expenses” tells the reader what is advisable. “You need an emergency fund of six months of your salary sitting in a savings account you do not touch” tells the reader what they need to do. The difference, at scale across 52,000 words, was the difference between a useful report and a book that people actually finish and recommend.
Karthik read the sample review, called us back, and asked one question: “How long will it take and what will it cost?”
The Edit: What We Did and Why
Karthik’s manuscript did not need a developmental edit. The structure was sound, the chapter architecture was logical, and the argument was built coherently from first principles to complex planning. What it needed was a thorough copy edit focused on three specific objectives: consistency of register, numerical and factual consistency, and voice transformation from institutional to conversational.
We quoted Rs. 95,000 for a comprehensive copy edit and proofreading of the 52,000-word manuscript, with an eight-week turnaround. Karthik approved the quote within twenty-four hours.
Weeks 1 to 5: Copy Edit
Our copy editor began by building a style guide specific to the manuscript before editing a single paragraph. The style guide resolved every consistency question upfront: “lakh” throughout, never “lacs” or “lacs”; percentages as numerals with the % symbol; large figures in the format Rs. 5,00,000 rather than Rs. 500000 or Rs. 5 lakh (the formatted version being easier for a general reader to parse at a glance); interest rate examples to specify compounding basis wherever the distinction was material.
The passive voice transformation was the most labour-intensive part of the copy edit. Our editor worked through every passive construction and evaluated it individually. Some passive constructions were retained where removing them would have altered the sentence’s meaning or rhythm. Most were rewritten in second person, matching the book’s intended register. “Systematic Investment Plans should be started early” became “Start your SIP as early as your first salary allows.” “Tax benefits are available under Section 80C” became “Section 80C gives you up to Rs. 1.5 lakh in deductions every year, here is how to use all of it.”
Chapter four, the one that had drifted in complexity, was flagged with forty-two specific inline comments requesting clarification or definition of terms. Karthik reviewed these and added plain-language explanations for every technical term, which the copy editor then integrated smoothly into the surrounding prose. The chapter’s register was fully aligned with the rest of the manuscript by the end of the process.
The copy editor also identified and flagged three interest rate examples in different chapters that used inconsistent compounding assumptions. Karthik reviewed each one, confirmed the intended basis, and the copy editor adjusted the surrounding explanation accordingly.
Weeks 6 to 7: Proofreading
The proofread caught thirty-one errors across the 52,000-word manuscript: nineteen punctuation inconsistencies, six instances of formatting irregularity in the tables of financial examples that appeared throughout the book, four spelling variants that had survived the copy edit, and two places where a figure quoted in the text did not match the same figure in an adjacent table.
Week 8: Final Delivery
Karthik received his final manuscript, a manuscript-to-upload guide for Amazon KDP India, and a formatting checklist for self-publishing. He handled the cover design and KDP upload himself. The book went live in August 2024.
The Result
Money is Not Maths reached number one in Amazon India’s Personal Finance subcategory within fourteen days of launch. It held a top-five position in that category for eleven consecutive weeks.
In its first three months, it sold 6,400 copies on Amazon India at a cover price of Rs. 399, generating approximately Rs. 8.16 lakhs in gross revenue before platform fees and printing costs. At a typical KDP India royalty rate for a book at that price point, Karthik’s net royalties in the first three months covered his entire editing investment more than three times over.
Two financial planning firms, one in Chennai and one in Hyderabad, approached Karthik directly after discovering the book through their clients. Both firms purchased bulk copies for use as client onboarding material. One ordered 300 copies. The other ordered 175.
The book’s visibility also transformed Karthik’s professional profile in ways that extended well beyond royalty income. He received corporate speaking enquiries from four companies within six weeks of publication, leading to a speaking pipeline that generated Rs. 12 lakhs in his first year as a published author.
His Amazon rating stood at 4.8 stars from 520 ratings at the four-month mark. The reviews consistently praised two qualities: the clarity of the language and the trust readers felt in the author’s knowledge. Both were qualities that the editing process had directly strengthened.
Karthik’s assessment was delivered with the precision of someone who has spent a career working with numbers: “I spent Rs. 95,000 on editing. In the first month after publication, that investment returned more than three times its value in royalties alone.
Key Takeaways for Authors
Professional writing experience is valuable but not the same as book editing experience. Karthik wrote clearly. His professional background gave him real advantages most first-time authors do not have. But professional writing and book writing serve different readers in different contexts, and the gap between them is exactly where editing adds its value.
Consistency is credibility, especially in non-fiction. In a book about personal finance, a reader who notices three different spellings of “lakh” or inconsistent interest rate assumptions will lose confidence in the author’s rigour. Copy editing is not bureaucratic fussiness. In technical and professional non-fiction, it is trust management.
Editing cost should be evaluated as an investment, not an expense. Karthik’s Rs. 95,000 editing cost was not a sunk cost. It was a capital investment in the commercial potential of his book. Authors who frame editing as an expense to be minimised often end up with books that underperform their potential. Authors who frame it as an investment make different decisions and see different outcomes.
The right type of editing matters as much as the quality of the editing. Karthik did not need a developmental edit. He needed a specific, targeted copy edit. Recommending a developmental edit he did not need would have added Rs. 80,000 to Rs. 1,20,000 to his investment without proportional benefit. Diagnosing the right intervention is what a professional editing process does that a cheap or automated one cannot.
