APC Bookkeeping

Service area · Renton, Washington

Bookkeeping for Renton contractors.

Renton sits in the middle of the south King County trades corridor, and its business tax is its own animal: a flat licence fee, a $500,000 tax threshold, and a classification split that quietly costs subcontractors more than primes.

1,238

Active contracting businesses registered in Renton.

180

Of them took out a licence in the past year.

$500K

Revenue before any B&O tax is due.

Renton · city tax profile

2026

City B&O tax

Gross receipts

Tax threshold

$500,000

Filing

Annual under $1M

Billing the owner

0.070%

Billing a general

0.121%

Business licence

$150 flat

From rentonwa.gov, checked September 2026.

Threshold and filing

Under $500,000 you owe nothing. You still file.

Renton’s B&O tax is a gross receipts tax, with no deduction for labour, materials, rent or any other cost of doing business. It applies once your annual taxable Renton revenue passes $500,000.

Fig. 01Two Renton thresholds, two different jobs
No tax dueTax dueQuarterly filing
B&O taxSet by annual taxable Renton revenue
No tax dueTax due
Filing frequencySet by revenue
Annual return, due April 30Quarterly
$0$500K$1M$1.5M
Below $500,000 no tax is due, but the return is still filed. Renton generally moves businesses over $1 million to quarterly filing.

Below that figure the tax is zero. The filing obligation is not. Renton states plainly that if the threshold has not been met no tax is due, but returns are still required to be filed. If you do business in Renton you need a Renton business licence and a B&O return, whatever your revenue.

Which frequency you land on

Filing frequency is set by revenue, and the dividing line is $1 million, not the $500,000 tax threshold. Two different numbers doing two different jobs, which is where the confusion usually starts.

Annual filers, under $1m

Reporting period

Calendar year

Return due

April 30

Aligned with

Your licence expiry

Quarterly filers, over $1m

January to March

April 30

April to June

July 31

July to September

October 31

October to December

January 31

The rate split

Subcontract work costs more here too.

Renton lists “construction for consumers” under retailing. Work billed to someone who resells it, which is what subcontracting to a general contractor is, falls under wholesaling instead. The two are not taxed the same.

Fig. 02The same work, two classifications
Billing the property ownerRetailing · construction for consumers0.070%
$70 on every $100,000 taxed
Billing a general contractorWholesaling0.121%
$121 on every $100,000 taxed
1.7×what subcontract work costs against prime work in Renton.
Fig. 03Owner rate and general contractor rate, three cities
Billing the ownerBilling a general contractor
Kent
0.1%
0.2%
Renton
0.070%
0.121%
Seattle
0.342%
0.342%
Rates only. Seattle applies its rate only above $2 million of Seattle revenue.

The same question, three different answers

If you work across city lines, this is worth understanding once and then building into the books. Whether prime and subcontract work need separating depends entirely on which city you are filing in.

Kent doubles the rate for subcontract work. Renton adds about 70%. Seattle charges the same either way.

Work outside the city

The deduction most Renton contractors miss.

Renton allows a deduction for receipts from retail services delivered outside the city but still within Washington. For a contractor based in Renton who works all over King County, that is real money.

Fig. 04Where an example year’s work actually was
Renton jobsJobs elsewhere
Every job this year100%
RentonKentSeattleAuburn
The Renton slice, if the ledger can show it30%
Renton
0%50%100%
Illustrative split. It only holds up if every job carries its location in the ledger, not just on the invoice.

The catch is that you can only claim it if you can prove it, and proving it means your books know where every job was. If your income is recorded as one undifferentiated pile of construction revenue, there is no way to separate the Renton work from the Auburn work at filing time, and the safe move becomes reporting all of it.

Renton also notes that its exemptions and deductions differ from other Washington cities and from the state. So a deduction your CPA claims on the state return does not automatically exist here, and the reverse is also true.

This is the single strongest argument for tracking job location in the ledger rather than only on the invoice.

The licence, separately

Annual registration fee

$150

Starting after 1 July

$75

No Renton location, under $4,000

No fee

A flat fee, unlike Seattle’s revenue tiers. It is due at application and at every renewal.

If you are behind

Renton has a way back in.

The city runs a Voluntary Disclosure Program for unregistered businesses, meant to encourage them to register and settle prior obligations rather than wait to be found.

If you have been working in Renton without a licence or without filing, that is the route, and it is a far better position than being assessed. What it needs from you first is a clean set of numbers showing what the prior years actually looked like. That is the cleanup work.

Fig. 05What cleanup produces
  1. 01
    Statements gatheredBank and card statements for every year in question.
  2. 02
    Ledger rebuiltEvery transaction entered from the statements, not from memory.
  3. 03
    Accounts reconciledEvery account tied out to zero difference.
  4. 04
    Revenue splitBy city and by classification, year by year.
  5. 05
    File-readyA file your CPA can file from.

Sales tax

Sales tax follows the job, not your office.

Washington sources retail sales tax to where the work is performed. A Renton contractor working in Kent charges Kent’s rate that week, and the same job-location detail that supports your B&O deduction supports this too.

Fig. 06One field, three answers
Recorded onceJob locationOn every invoice and every cost.
01The right sales tax rateSourced to the job site, not your office.
02The out-of-city deductionProvable rather than theoretical.
03Job profitabilityWhich jobs actually made money.

What that means for your books

Set up once, job location does three jobs at the same time.

The work

What I actually do about all this.

I keep the books. I do not file your taxes and I am not your CPA. What I do is make sure the numbers behind every one of those filings are right, and hand your tax preparer statements they can work from without rebuilding anything.

Where to start

Behind on the books, or not sure they would survive a look? Start with cleanup. Running fine but want them kept right? Start with monthly.

Questions

Questions Renton contractors ask.

Don’t see yours? Email me at paulaleksic@apcbookkeeping.com

Yes. Below the threshold no B&O tax is due, but Renton still requires the return to be filed, and you still need a Renton business licence to do business in the city. The city even provides a no-business return for years with no activity.

They do different jobs. $500,000 is the point at which tax becomes payable. $1 million is the point at which Renton generally moves you from annual filing to quarterly filing. You can be a quarterly filer and still owe nothing, and you can owe tax while filing once a year.

It can. Renton allows a deduction for retail services delivered outside the city but within Washington. Claiming it depends on your books being able to show where each job was, which is a setup question more than a filing question.

Yes, though not as dramatically as in Kent. Renton taxes retailing at 0.070% and wholesaling at 0.121%, so subcontract work runs about 1.7 times the prime rate. In Seattle the two are identical, which is why the answer depends on where you are filing.

Renton runs a Voluntary Disclosure Program for exactly that situation, and coming forward is a better position than being assessed. Start with cleanup so you know what the prior years actually look like before you approach the city.

Book a free consult

Tell me where the books stand.

Fifteen questions about your business and your books. I read every one personally, and you get a straight answer about what it would take to put your Renton filings on solid ground.