ERP Development Company in Seattle

We quote ranges first and then a fixed fee against a signed statement of work, because ERP scope moves more than any other category. A single-entity implementation on Acumatica, NetSuite or Dynamics 365 Business Central covering finance, purchasing, inventory and two or three integrations typically runs USD 120,000 to 350,000 over four to eight months. A mid-market multi-entity implementation on Dynamics 365 Finance and Operations or NetSuite OneWorld with manufacturing or distribution modules, a custom Washington B&O engine, payroll integration and a reconciled historical data migration typically runs USD 350,000 to 1,200,000 over nine to eighteen months. A large SAP S/4HANA or Infor CloudSuite programme across several plants and legal entities with export control, quality and warehouse management in scope runs USD 1,200,000 to 5,000,000 and up over two years or more. Software licences and cloud subscriptions sit with your vendor and are not in those figures. The bigger cost variable on an ERP programme is not the rate card at all. It is how quickly your side can clean vendor and item master data and close open configuration decisions. Every week a decision sits unmade is a week of paid team capacity, and that single factor moves ERP budgets further than any hourly figure either of us negotiates. This is why we put data profiling in week one and attach named customer-side owners to every cleanup item.

As a first-class module, because no packaged ERP tax engine models it properly. The Business and Occupation tax is a gross receipts tax: as the Department of Revenue states, businesses cannot deduct expenses such as labour, materials, taxes or other costs of doing business, and there are more than fifty classifications, with a business conducting multiple activities owing under more than one. That means the ERP has to classify revenue at the transaction line rather than the customer or the company. We build a classification engine that assigns a B&O category per revenue line from the item, service code and contract type, applies the correct rate, handles the multiple activities tax credit, and produces a report that reconciles line for line to the excise tax return filed through MyDOR. On top of that sit separate municipal B&O regimes in Seattle, Bellevue, Tacoma and Everett with their own apportionment formulas, which we model as an additional allocation layer keyed to where the work was performed and where the customer received the benefit. We also account for SB 5814, signed May 20 2025 as Chapter 422, Laws of 2025, which extended retail sales tax to a set of previously untaxed services and changed the classification of some revenue that used to be service-only.

Four things break naive payroll configurations here. First, the Seattle payroll expense tax, effective January 1 2021 and filed quarterly, which applies to employers above a Seattle payroll threshold that indexes annually to CPI and only counts compensation above a per-employee threshold that also indexes. Its rates are tiered by both total company payroll band and individual employee compensation band, so payroll has to bucket each employee's Seattle-sourced compensation into the right tier every quarter rather than applying a flat rate. Second, Washington Paid Family and Medical Leave, an employee and employer premium reported to the Employment Security Department with its own wage base and quarterly reporting file. Third, the WA Cares Fund long-term care premium, an employee-side deduction with exemption handling that has to be honoured retroactively when an exemption is approved mid-year. Fourth, the Equal Pay and Opportunities Act amendment in SB 5761, signed March 30 2022 as Chapter 242, Laws of 2022 and effective January 1 2023, which requires wage scale or salary range disclosure in job postings, so the compensation band data has to live in the HR module and flow to the applicant tracking system rather than sitting in a recruiter's spreadsheet.

Yes, and in Puget Sound it is usually the first requirement rather than a late addition. For suppliers into Boeing, Blue Origin, SpaceX and the wider defence base, the ERP has to carry an export control classification on the item master and on technical data attachments, covering ITAR and the Commerce Control List under EAR. Access to controlled technical data is gated by person, not just by role, which means the ERP identity layer needs to hold nationality and licence eligibility attributes and enforce them at the document, drawing and routing level. Purchase orders and shipping documents need destination and end-use screening against restricted party lists before release. Every access to a controlled record is logged, because the audit question is who saw what and when. On the cybersecurity side, defence contract work brings NIST SP 800-171 controls and CMMC assessment obligations into scope for the systems that store or process controlled unclassified information, which usually means a separated enclave rather than a general-purpose ERP tenant. For workloads that must sit in a government cloud we deploy to AWS GovCloud (US-West) or Azure Government rather than commercial regions.

We implement and extend packaged ERP for the financial and operational core, and we build custom only for the parts that are genuinely specific to your business. Building a general ledger from scratch in 2026 is a bad use of money. Building a Washington B&O classification engine, a configure-to-order product configurator for a truck dealer network, a yield-based costing model for forest products, or an export-controlled document access layer is often unavoidable because no vendor ships it. The dividing line we use is whether the process is a competitive differentiator or a commodity. Commodity processes go into the package as delivered, and we push back hard on customisations that exist only because that is how the old system worked. Differentiating processes get built as extensions on the platform's supported extensibility model, which means AL extensions in Business Central, X++ extensions and Power Platform in Finance and Operations, SuiteScript in NetSuite, ABAP on the S/4HANA extensibility framework or side-by-side services on Azure, and the xRP platform in Acumatica. Custom code that sits outside the supported extension model is how companies end up unable to take an upgrade, and we will not build it that way.

A single-entity mid-market implementation runs four to eight months, a multi-entity programme with manufacturing runs nine to eighteen months, and a large multi-plant SAP or Infor programme runs two years or more. Those numbers assume the customer can supply decision-makers, not just observers. Bad go-lives share a small number of causes: data that was never profiled, a cutover that was never fully rehearsed, a scope that grew because nobody would say no, and a business that never actually trained. We attack all four. Data profiling happens in week one and drives a written cleanup plan with named owners on the customer side. Cutover is rehearsed at least three times end to end including a mock month-end close, with the runbook timed to the minute. Scope changes go through a written change request with a cost and a date, every time. Training runs on the configured system with real company data, not a demo tenant. We plan parallel running through one full month-end and one quarter-end close before the legacy system is retired, and our Chandigarh team runs verification through the Seattle night during cutover weekend while Edmonton is on call for the Pacific morning.