# How duplicate deals skew your win rate | Dedupely > Win rate divides deals won by deals closed, and duplicate deals change both numbers. How they skew the rate, and how to find the duplicates behind it. - URL: https://dedupe.ly/blog/crm-organization/duplicate-deals-skew-win-rate - Section: blog - Published: 2026-11-14 - Site index: https://dedupe.ly/llms.txt - Any page: append `.md` to its URL for this plain-text form --- Skip to content [New Dedupely Intelligence Now on every paid plan, monthly or yearly.](https://dedupe.ly/ai-deduplication) [Blog](https://dedupe.ly/blog) [CRM Organization](https://dedupe.ly/blog/crm-organization) ## How duplicate deals skew your win rate By [Gaby Salinas](https://www.linkedin.com/in/gbyslns) Updated November 14, 2026 # min read TL;DR - Win rate is deals won divided by deals closed, so every duplicate deal changes the math. - Duplicate lost deals are the most common kind, and they push the win rate down. - Duplicate won deals push it up, and usually show up in revenue too. - Find duplicate deals by company, amount and close date, and review them by hand before merging. - Dedupely merges duplicate deals in HubSpot, Pipedrive and Close; you pick which stage, amount and owner win. Pipeline value gets most of the attention when people talk about duplicate deals. Win rate is quieter, but it matters just as much: it's used to forecast, to set targets and to judge reps. And because it's a ratio, a few duplicates can move it more than you'd expect. This post covers how duplicate deals change win rate, which direction they push it and how to find them. ### How win rate is calculated Win rate is usually: **Deals won ÷ (deals won + deals lost)** Some teams count by number of deals, others by value. Either way, every duplicate deal adds to one side or both. ### Which duplicates push it which way | Duplicate | Effect on win rate | | --- | --- | | A lost deal entered twice | Win rate goes down: one loss counts as two | | A won deal entered twice | Win rate goes up, and revenue is overstated | | An old lost deal plus a new won deal for the same opportunity | Win rate goes down, if the old one should have been reopened instead | | Open duplicates later closed as lost to clean up | Win rate goes down, from losses that never happened | The last one is the most common. Someone finds duplicate open deals and closes the extras as "lost". The pipeline looks right, but each cleanup creates a lost deal that wasn't a real loss. Example Say a team closes 100 deals in a quarter: 30 won and 70 lost, a win rate of 30 out of 100. Ten of the lost deals are duplicates of other deals, closed as lost during a pipeline cleanup. Without them, it's 30 won out of 90 closed, and the team's real win rate is better than the report shows. ### Don't close duplicates as lost When you find duplicate deals, merge them, or use a separate closed reason like "Duplicate" that your win rate report leaves out. Closing them as lost puts a fake loss into every win rate report from then on. ### How to find duplicate deals Deals rarely have an email to match on. Use a combination: - **The same company or account.** - **A similar amount,** or the same products. - **Close dates or created dates** within a few weeks of each other. - **The same contact** on both deals. Review every set by hand. Two deals with the same company and amount can be two real purchases, like an annual renewal and an add-on. Pro tip Before you fix anything, filter your closed-lost deals by reason. If a lot of them say "duplicate" or "created by mistake" in the notes, your win rate has been too low for a while. ### After you merge - **Recalculate win rate** for recent periods, so forecasts use the real number. - **Fix past "lost" duplicates** by changing their reason to "Duplicate" and leaving them out of reports, if you can't merge them. - **Stop new duplicates at the source:** usually deals created from forms, integrations or by two reps on one account. ### How Dedupely helps Dedupely can find and merge deals in HubSpot (Deals), Pipedrive (Deals) and Close (Opportunities). You can match deals on any synced field, like company, amount or close date, and send sets to Manual Review so a person decides each one. Merge Rules let you choose which stage, amount, close date and owner win, and you can preview the merged deal before merging. Each merge is logged in Merge History. Archived Pipedrive deals can't be merged. [Find duplicate deals](https://v2.app.dedupe.ly/signup) ### Fix the denominator Duplicate deals change win rate in both directions, and the most common cleanup, closing extras as lost, pushes it down with losses that never happened. Merge duplicate deals instead, or use a separate "Duplicate" reason, and recalculate the rate once the data is clean. ### Frequently asked questions #### Do duplicate deals affect win rate? Yes. Duplicate lost deals lower it, and duplicate won deals raise it and overstate revenue. #### Should I close duplicate deals as lost? No. It adds losses that never happened. Merge them, or use a separate "Duplicate" closed reason that reports leave out. #### How do I find duplicate deals? Match on company, amount and close or created date, and review each set by hand. #### Can two deals for the same company be legitimate? Yes. A renewal and an add-on, or two separate purchases, can look alike. Review before merging. #### What should I do after merging? Recalculate win rate for recent periods and fix the source that's creating duplicate deals. Behind the article ### Gaby Salinas Marketing Assistant at Dedupely Gaby Salinas came to CRM data from marketing and advertising, so she looks at duplicates from two sides: the match and merge logic behind them, and what they do to the people using the CRM, like the rep who calls a customer twice, the admin who gets blamed and the cleanup nobody wants to start. As Marketing Assistant at Dedupely, she follows how RevOps teams, end users, consultants and technical teams actually work with their data: the records they stop trusting, the workarounds they build and the moment they finally decide to clean up. What she finds shapes most of what Dedupely publishes. [Connect with Gaby on LinkedIn](https://www.linkedin.com/in/gbyslns) ### Contact us We’d be happy to help you get this set up. #### Write us a message We probably know the answer to your question already help@dedupe.ly Email copied to your clipboard! [Book a Zoom Whether you’re getting started or getting intense. Get in touch! Book a zoom](https://meetings.dedupe.ly/meetings/gaby-salinas/dedupely-zoom-scheduler) ### Discover Related Blog Posts Stay updated with our latest articles and insights. - [Duplicates Duplicate deals and how they inflate your pipeline Duplicate deals inflate your pipeline, skew forecasts and can pay a commission twice. See where they come from and when two deals aren't duplicates. Gaby Salinas October 23, 2026](https://dedupe.ly/blog/duplicates/duplicate-deals-inflate-pipeline) - [HubSpot How to merge duplicate deals in HubSpot Find duplicate deals in HubSpot, choose the primary deal, and check which properties, activities and associations a merge keeps before you combine records. Gaby Salinas October 19, 2026](https://dedupe.ly/blog/hubspot/hubspot-duplicate-deals) - [CRM Organization How to tell if duplicates are skewing your reports Duplicates inflate customer counts and pipeline and drag down conversion and win rates. Signs to look for, and a quick check before a report goes out. Gaby Salinas October 19, 2026](https://dedupe.ly/blog/crm-organization/duplicates-skewing-reports) ### Get started for free 20 free trial merges and as much free support as you need to get your duplicates under control. [Try for free](https://v2.app.dedupe.ly/signup)[Talk to sales](https://meetings.dedupe.ly/meetings/gaby-salinas/talk-to-sales) [Or sign up with Google](https://v2.app.dedupe.ly/signup/google) Running CRM cleanup for clients? [See the Partner Program](https://dedupe.ly/become-a-partner)