Washington Bookkeeping

Keeping records that support the books

All Washington businesses must keep complete and accurate records from which the Department of Revenue may determine any tax for which the business may be liable. Records must demonstrate the amount of gross receipts and sales from all sources, including barter or exchange transactions, and the amount of all deductions, exemptions, or credits claimed, with supporting documentation. Records include general ledgers, sales journals, bills, invoices, cash register tapes, and other original entries, plus federal and state tax returns and workpapers used to prepare them. Source: Washington Department of Revenue, Record keeping requirements, https://dor.wa.gov/education/industry-guides/bail-bond-agencies/record-keeping-requirements and the same guidance at https://dor.wa.gov/education/industry-guides/convenience-stores/record-keeping-requirements

How state taxes affect the ledger

Washington does not have a corporate or personal income tax. The Department of Revenue states this directly and lists the taxes Washington businesses generally face instead, namely business and occupation tax, retail sales and use tax, and personal property tax. Source: https://dor.wa.gov/education/industry-guides/mortgage-brokers/business-tax-structure-washington-state

The state business and occupation tax, called the B and O tax, is a gross receipts tax measured on the value of products, gross proceeds of sale, or gross income of the business. The Department combined excise tax instructions state that Washington does not have an income tax, that B and O tax is calculated on gross income, and that there are no deductions from B and O tax for labor, materials, taxes, or other costs of doing business. Source: https://dor.wa.gov/file-pay-taxes/file-or-amend-my-return/instructions-completing-combined-excise-tax-return/combined-excise-tax-return-state-business-and-occupation-tax

B and O tax rates differ by classification. The Department B and O page lists retailing at 0.471 percent of gross receipts and wholesaling at 0.484 percent, with service and other activities and other classifications taxed at their own rates. Retail sales tax must also be collected on sales subject to retailing B and O tax unless a deduction or exemption applies. Source for the classification examples: https://dor.wa.gov/education/industry-guides/private-mailing-business-tax-guide/business-and-occupation-bo-tax

Payroll records and employer reporting

Washington has no state wage income tax withholding, because it has no personal income tax, as in the state tax section. Washington employers do have state payroll based programs, including unemployment insurance through the Employment Security Department, workers compensation through the Department of Labor and Industries, and Paid Family and Medical Leave premiums administered by the Employment Security Department, each with wage reports that use payroll records.

Employers must report all new and rehired employees within 20 days of hiring. Washington law cited by the Employment Security Department is Revised Code of Washington 26.23.040. A rehired employee includes a person who has not worked for that employer in the past 60 days, as described by the Department. Report information includes employee name, address, Social Security number, date of birth, and date of hire, and employer name, address, and federal employer identification number. Reports go to the Department of Social and Health Services, Division of Child Support. Sources: https://esd.wa.gov/employer-requirements/reporting-new-and-rehired-employees and https://www.dshs.wa.gov/family-food-and-housing-services/child-support/employer-resources/new-hire-reporting

Income, purchases, and documentation

Washington documentation is governed by the rule in the recordkeeping section. Records must show gross receipts and sales from all sources, including barter, and must support every deduction, exemption, and credit claimed. The Department list includes purchase and cash disbursement journals, purchase invoices for assets and expense items, sales invoices, financial statements, and reseller permits for wholesale sales. Source: https://dor.wa.gov/education/industry-guides/convenience-stores/record-keeping-requirements

How long to retain records

Business records under Washington Administrative Code 458.20.254 must be preserved for five years. The Department phrases the duty as keeping complete and adequate records for at least five years, and repeats the five year rule for reseller permits and for records after a business closes. Sources: https://dor.wa.gov/education/industry-guides/bail-bond-agencies/record-keeping-requirements and https://dor.wa.gov/file-pay-taxes/filing-frequencies-due-dates/annual-business-filers

When an industry needs additional records

Construction. Contractors are subject to B and O tax classifications for construction activities, retail sales tax or use tax on materials in specified fact patterns, and prevailing wage and workers compensation reporting where those programs apply. Job records need to separate labor, materials, subcontractor costs, and location, because city B and O tax and retail sales tax sourcing can depend on job location.

Cannabis. Licensed cannabis businesses are subject to B and O tax, retail sales tax, and Washington State Liquor and Cannabis Board record and traceability duties, in addition to Department of Revenue tax records. Scope is limited to licensed cannabis businesses.

Bookkeeping in practice

The following situations illustrate how a business might organize its records. They are examples, not a determination of tax treatment for any particular business.

A Seattle service business with no employees keeps a gross income ledger by B and O classification, files its combined excise tax return in My DOR, and keeps ledgers, invoices, and returns for five years, even though it has no Washington income tax return to file.

A retailer sells goods at wholesale to a reseller and at retail to consumers. It keeps the buyer reseller permit for five years for the wholesale sales, collects retail sales tax on the retail sales, and reports the two categories under different B and O classifications, as in Parts 2 and 4.

Business and occupation tax on gross income

Washington businesses illustrate the difference between profit and taxable gross income. Supplier costs may be expenses on the profit and loss statement without reducing the gross base for B and O tax. The books should make that difference understandable rather than forcing both calculations into a single number.

This is an accounting workflow distinction, not a claim that every business in Washington is subject to the same tax or filing rule. The applicable treatment depends on the actual transaction and the business activity. A bookkeeper's responsibility is to preserve the transaction evidence and classify the amounts consistently. Determining a disputed tax position or filing treatment is a separate professional judgment.

A practical monthly review for Washington businesses

Begin with the original source rather than the bank feed. A customer invoice, sales report, payroll register, supplier bill, or contract explains what occurred. Match it to the corresponding deposit or payment, investigate differences, and record adjustments with a clear explanation. When a state tax or payroll report is required, maintain a separate reconciliation from the ledger to the amounts included in that report. That allows an owner to compare operating results without confusing business income with taxes collected, employee withholdings, or other liabilities.

For an owner preparing to hand records to a tax professional, the useful package includes a period summary, filed return copies where applicable, the transactions supporting material adjustments, and a short list of unresolved questions. A reconciled bank account is only part of that package. The quality of the records depends on whether a reviewer can trace important figures back to their sources.

What to keep available

Maintain organized copies of the invoices, receipts, bank and card statements, payroll reports, account reconciliations, and any exemption or special program documents relevant to the business. A retention schedule should identify which law or program controls each category instead of assuming one deadline covers every record. Keep documents connected to a pending audit, claim, or dispute until the matter is resolved, and verify any destruction decision against the current applicable rule.

Paper Trail handles the bookkeeping organization, classification, and reconciliation side of this work. Tax return positions, legal interpretations, and specialized payroll classifications should be reviewed by the appropriate qualified professional.