{"id":"concept:closing-the-books","kind":"concept","label":"Closing the Books","synonyms":["closing out the month","close the books"],"definition":"In BalanceMCP, closing the books means locking a period through a chosen date so nothing can post on or before it, rather than performing ceremonial entries that zero out income and expense into equity.","summary":"\"Closing the books\" means two different things across accounting software. Some systems perform actual entries that zero out income and expense at year-end. BalanceMCP does the other, simpler thing: it locks a date so nothing can post into it anymore, while Retained Earnings keeps calculating live regardless.","explanation":["The phrase denotes two different operations, and which one it means depends entirely on the software. In the older sense it is an event: a set of closing entries posted at year-end that zero every income and expense account and roll the result into retained earnings, so the accounts literally start again from nothing. In the sense BalanceMCP uses, it is a state: a date before which nothing may be posted.","The distinction is not pedantry, because the two have opposite implications for what the numbers do afterwards. Under the first, a prior year's income accounts read zero because they were emptied. Under the second, they read exactly what they always read — the period is simply sealed against new entries. Someone arriving from software that does the first will look for closing entries here and find none, and nothing has gone wrong.","Retained Earnings is the term most often confused with it, and the two are unrelated here. Retained Earnings is computed live from all-time income minus all-time expenses whenever a balance sheet runs, whether or not any period has ever been locked. Locking does not feed it, and closing entries do not exist to feed it.","Related but distinct: a period lock is the mechanism, closing the books is what you call having used it. Month-end close is the routine that ends in one."],"commonMistakes":["Expecting a ceremonial closing entry to zero out income and expense accounts — nothing like that happens here; Retained Earnings is computed live instead.","Locking a period before reconciling and reviewing it, rather than after — locking is meant to be the last step of the routine, not the first.","Assuming a mistake found in an already-locked period requires reopening it — the fix is a reversing entry dated in the currently open period instead."],"category":"close","questions":[{"question":"Does closing the books zero out my income and expense accounts?","answer":"No. Locking a period doesn't touch your accounts at all — it only prevents new entries from posting into it. Retained Earnings is calculated live from cumulative activity regardless of what's been locked."},{"question":"What should I do right before I lock a period?","answer":"Reconcile every bank account for that period, make sure everything's categorized, and review the P&L to confirm it looks right. Locking should be the last step, once you're confident, not a way of forcing yourself to finish up."}],"url":"/glossary/closing-the-books","relatedTo":[{"id":"concept:period-lock","relationship":"related","weight":0.9,"api":"/api/knowledge/concept%3Aperiod-lock"},{"id":"concept:month-end-close","relationship":"related","weight":0.9,"api":"/api/knowledge/concept%3Amonth-end-close"},{"id":"concept:year-end-close","relationship":"related","weight":0.9,"api":"/api/knowledge/concept%3Ayear-end-close"},{"id":"concept:retained-earnings","relationship":"related","weight":0.9,"api":"/api/knowledge/concept%3Aretained-earnings"},{"id":"concept:reversing-entry","relationship":"related","weight":0.9,"api":"/api/knowledge/concept%3Areversing-entry"},{"id":"guide:what-closing-the-books-means","relationship":"references","weight":0.7,"api":"/api/knowledge/guide%3Awhat-closing-the-books-means"},{"id":"tool:lock_period","relationship":"references","weight":0.7,"api":"/api/knowledge/tool%3Alock_period"}],"referencedBy":[{"id":"concept:fiscal-period","label":"Fiscal Period","url":"/glossary/fiscal-period"},{"id":"concept:retained-earnings","label":"Retained Earnings","url":"/glossary/retained-earnings"},{"id":"concept:period-lock","label":"Period Lock","url":"/glossary/period-lock"},{"id":"concept:month-end-close","label":"Month-End Close","url":"/glossary/month-end-close"},{"id":"concept:year-end-close","label":"Year-End Close","url":"/glossary/year-end-close"}],"license":"https://creativecommons.org/licenses/by/4.0/","attribution":"BalanceMCP — https://balancemcp.com"}