You added a second rep, and now somebody has to decide which accounts they get. On a team without RevOps, that somebody is usually you, the tool is a CRM export, and the method is a sort by company name with a line drawn somewhere near the letter M. Or a map, with one rep taking the West and the other taking everything else.
Both cuts look fair on the day you make them, because both hand each rep the same number of accounts. Then a quarter goes by. One rep sits on the biggest customers and most of the open pipeline. The other works a list of companies that stopped answering two years ago. Equal account counts, unequal books, and a pipeline review that turns into a negotiation.
The split you can defend comes from three numbers already in your CRM: accounts, existing customers and open pipeline per book. Clean the account data before you cut. A split built on wrong firmographics moves the unfairness from one rep to another, and the owner fields have to change before any of it is real.
Why does a territory split need clean account data first?
Because the split inherits whatever is wrong with the records underneath it. In Validity’s State of CRM Data Management in 2025 (published July 2025, a survey of 602 CRM users and stakeholders), 76% said less than half of their organization’s CRM data is accurate and complete. If you cut territories on industry or company size fields, you cut on those errors.
Salesforce makes the same call in its own documentation. Its Trailhead module Get Tips and Tricks for Sales Territories (checked October 2026) recommends against using territory assignment rules to clean up data and says to handle cleanup separately, so the rule structure stays lean.
Clean first. Split second.
Three data checks to run before you cut
Run three checks on your account data before anyone sees a proposed book: merge duplicate companies, fill in or correct the size and industry fields you plan to split on, and pull the accounts with no owner or an owner who has left. Each check changes the account, customer and pipeline counts you balance on in the next step, so skipping one means balancing on the wrong totals.
- Duplicate companies. Two records for the same company means two owners, two pipeline totals and one confused buyer. Merge them first, or the same account lands in two books. If contacts are part of the mess, start with duplicate contacts in HubSpot.
- Missing or wrong size and industry fields. If you plan to split by segment, the segment fields have to be filled in and correct. A blank employee count sorts somewhere, and where it lands decides which rep gets the account. If your field list has grown past what anyone maintains, read CRM field bloat before adding more.
- Accounts with no owner, or a departed owner. Pull the companies with a blank owner or an owner who has left. These accounts sit outside the count today, and once you assign them they change the totals in each book.
Balance books on three CRM numbers
Count three things for each proposed book: accounts, existing customers and open pipeline. Adjust the split until the three numbers sit close together across reps. Equal account counts alone hide the two numbers that drive a rep’s quarter, which is how one rep ends up with the renewal base and the live deals while another gets a prospecting list.
Separating existing customers from new logos takes one field in HubSpot. HubSpot’s default deal properties (last updated September 29, 2026) include Deal type, which ships with the options New Business and Existing Business, and admins can edit or add deal types in deal property settings. Fill it in on open deals and you can report existing-customer revenue and new-logo pipeline per book.
Here is how an alphabet or region cut can go wrong. Each rep gets the same share of accounts. One book ends up holding most of the existing customers and most of the open pipeline, and another holds prospects that have not bought.
| Cut | Accounts per rep | Existing customers | Open pipeline |
|---|---|---|---|
| First cut (alphabet or region) | Even | Piled into one book | Piled into one book |
| Balanced cut | Close to even | Close to even | Close to even |
The first cut passes the eye test on account count and fails on the two columns that decide the quarter. One rep starts the quarter with a renewal base and a pipeline the others would trade for. Another starts with a prospecting list.
The balanced cut takes more work. You move named customers and live deals between books until all three columns line up, which means somebody gives up an account they like.
That is the point.
What about named accounts and inherited customers?
Write the rule before you draw the split, and share it before anyone sees their book. The rule answers three questions: who keeps an account with an open deal, who keeps an existing customer, and how long a protected account stays protected. Decide those up front and the reassignment becomes a lookup instead of a debate.
In HubSpot, contacts can follow their company’s owner. With the “Assign company owner to contact by default” setting turned on, HubSpot assigns contacts and their primary company to the same owner (HubSpot Knowledge Base, last updated October 9, 2026). After you move companies, check who owns the contacts underneath them before the new owners start outreach. New inbound leads need their own routing logic too; see HubSpot lead routing.
How do you move the accounts in HubSpot or Salesforce?
The split exists only once the owner fields change. In HubSpot, each record has one selected owner in the default owner property, on all products and plans, according to HubSpot’s “Set a record owner” article (last updated October 9, 2026). If you need to relate more users to a record, such as an SDR or a customer success manager, create custom HubSpot user properties for them.
To move a book in HubSpot, go to the object index page, select the records, click Assign, choose the new owner and tick Reassign all incomplete tasks, then click Update. That last checkbox moves open tasks with the account, so the old owner’s follow-ups land with the new one. For a large move, HubSpot also supports assigning owners in bulk through an import file with an owner column mapped to the owner property (same article).
Salesforce works differently. Its Trailhead module Get Tips and Tricks for Sales Territories (checked October 2026) says Sales Territories doesn’t automatically assign or change account owners. Territories model which reps and roles cover an account. The account owner field stays where it was until you change it. The same module notes that territory assignment rules are limited to 10 filter criteria fields, which is one more reason to clean the data before you build rules on top of it.
If you split in Salesforce territories and leave the owner field alone, you end up with a new map and the old owner names still on the accounts.
How will you know the split is fair after a quarter?
Look at pipeline created per book and win rate per book before you blame the territory. In The Bridge Group’s AE Models, Motions & Metrics: 2026 Research Report (published June 22, 2026), 48% of reps were at quota, down from 51% in 2024. With fewer than half of reps hitting the number, a single miss does not prove a bad territory. For more on that trend, see the quota attainment crisis.
Compare the books on activity they control. If one book creates far less pipeline from a similar account base, look at the accounts first. If pipeline is even and win rates differ, look at the rep and the deals.
Build one more report while you are in there: new-logo revenue versus existing-customer revenue by rep, using the Deal type field. It shows who on the team is hunting and who is farming. If one rep’s number comes almost entirely from existing customers, the next split should account for that, either by giving that rep the renewal base on purpose or by moving some of it.
Pick the argument you want to have
You can split with three numbers you can defend in a pipeline review, or you can split by alphabet and hear about it each quarter from whichever rep drew the short end. The checks and the rebalancing cost you some hours up front. A good rep quitting over a book they could not win from costs more. For more on running this without a dedicated ops hire, read RevOps without a RevOps team.
Want to know how clean your account data is before you cut? The free CRM Diagnostic runs 40+ automated checks across data quality, pipeline hygiene, freshness, reachability and ICP fit.