Most firms reach a point where the spreadsheet that ran the portfolio stops being good enough. The version-control chaos, the manual report rebuild every quarter, the moment someone asks a question the workbook can’t answer — that is usually when the search for software begins. The catch is that off-the-shelf portfolio tools come with their own compromises: a workflow that isn’t quite yours, a per-seat fee that grows with the team, and reporting that never looks the way your clients or your board expect. At ByteGears we build portfolio management systems around how you actually work.
We’re a UK software consultancy, and most of our clients are SMEs and mid-market firms who outgrew their tools and didn’t want to trade one set of constraints for another. The systems we build are yours outright. You decide what they do, what they connect to, and how they change.
A quick clarification, because the term covers two jobs. Some firms want a project portfolio system — a single view of every active project, with intake, prioritisation, resourcing and budget-versus-actuals. Others want an investment portfolio system — positions, valuations, performance and regulatory reporting across asset classes. They share language but need different data models, so the first thing we do is establish which one you need. Some clients want elements of both.
Where off-the-shelf portfolio software runs out of road
Generic portfolio tools tend to swap old problems for new ones. The complaints we hear most often:
- The vendor’s workflow doesn’t match yours, so the team bends its process to fit the software — or quietly keeps a shadow spreadsheet running alongside it
- Per-user fees that look modest at £50 to £300 a head and become a serious line item once you pass 20 or 30 people
- Weak integration with your accounting package, ERP or CRM, so project actuals and positions still get copied across by hand
- Reporting that can’t be shaped to your house format, your chosen metrics or what a regulator wants to see
- A generic data model that won’t bend to fund-of-funds carry logic, multi-generational family office holdings, or stage-gated development costs
- No real UK compliance support, so FCA, AIFMD or GDPR requirements turn into an expensive custom add-on anyway
The result is reconciliation work that eats afternoons, a portfolio view you don’t fully trust, and a long feature list that still can’t do the one thing you bought it for. The biggest enterprise platforms solve some of this, but at £100k or more a year and a 12-to-24-month rollout, they are built for institutions a different size to most UK firms.
To be fair: if your needs are standard — general project tracking, a traditional advisory book, light integration — a mainstream SaaS tool may be the sensible choice, and we’ll tell you so. Custom earns its place when your workflows, data model or compliance obligations are genuinely non-standard.
What we do differently
We start with your process, not our code. We map how you work now, where it breaks, and what needs to talk to what. The data model gets designed around your reality — your asset classes, your fund structures, your approval gates — rather than forced into someone else’s schema.
You buy it once. No per-seat subscription compounding year after year. As the team grows, the cost of the software doesn’t.
It connects to what you already run. Accounting and ERP systems, CRMs, market and fund data feeds. We build those integrations as part of the project, and we plan honestly for the awkward ones — custodian feeds that arrive as scheduled files rather than clean APIs, and data providers with strict rate limits.
It’s built for UK requirements. Where you’re regulated, FCA systems-and-controls expectations, personal account dealing oversight, MiFID II transaction reporting, AIFMD investor reporting and UK GDPR are in scope from the first design conversation. Audit trails and retention are built in from day one, not retrofitted.
It grows in modules. New asset classes, extra reporting, tighter permissions, a client portal. The architecture is built so these get added without a rebuild.
Support comes from people in your timezone. Our team is UK-based. When something needs attention, you’re not waiting overnight for a reply.
What goes into the system
The right build depends on which kind of portfolio you’re managing. A typical investment-focused system includes:
- A dashboard showing performance and exposure across every asset class, with live or scheduled valuations
- Position, fund and account records — quantity, cost basis, market value, allocation and benchmark
- Automated data pulls from custodians and market data sources, with sensible handling for file-based feeds
- A reporting engine that produces client-ready statements in your house format with the metrics you choose
- Performance and risk analytics: time-weighted and money-weighted returns, exposure, volatility and scenario tools
- A document store for investment memos, KYC paperwork and compliance records
- Workflow automation for rebalancing, client onboarding and compliance checks
- Role-based access and an immutable audit log of every action, for oversight and regulatory readiness
A project-focused build leans more towards intake forms and scoring, resource capacity planning, budget-versus-actuals with cost-centre mapping, approval routing with proper exception handling, a risk register, and roll-up reporting from project to portfolio level. Either way, you get an API to connect the rest of your stack.
How the project runs
Discovery and planning (2 to 4 weeks). Workshops and a review of your current setup so we understand the processes, the pain points, the integration requirements and — crucially — the state of your data.
Development (8 to 16 weeks). Our UK developers build in increments with regular check-ins, so you see progress and can steer. We ship a usable core first rather than holding everything back for one launch.
Testing and deployment (2 to 4 weeks). Quality assurance and user acceptance testing against realistic scenarios, then go-live.
Training and support (ongoing). We train administrators and end users, leave documentation behind, and stay reachable.
A word on data, because it is the single biggest reason portfolio rollouts slip. Inconsistent status codes, missing owners, duplicate records and mismatched entity names tend to surface mid-migration if nobody looked first. We assess data quality early and usually recommend going live on current, active records, then backfilling history afterwards — it gets you to value faster and avoids a stalled cutover.
What it costs, and what it owns
Custom development is real money upfront. The trade is what you stop paying and what you keep:
- No per-user SaaS fees climbing with every hire — often £50 to £300 per user per month on portfolio platforms
- Automated reporting and reconciliation handing back hours that currently go on manual rebuilds
- A data model that fits your portfolio, so the numbers you decide on are right
- You own the codebase and the data, with no vendor lock-in and no roadmap to wait on
A focused build for an SME — portfolio dashboard, intake or position tracking, reporting, permissions and one key integration — is the lighter end of the range. Builds with custodian feeds, FCA or AIFMD reporting and a client portal sit higher because the compliance and integration work is genuinely deeper. Set against several years of per-seat subscriptions, premium compliance modules and setup fees, the maths often holds up, but it depends on your team size and how unusual your requirements are. A free consultation gets you a real estimate, not a guess.
Who this works for
We build portfolio systems for firms whose workflows or compliance needs don’t fit a generic tool:
- Wealth managers and RIAs wanting discretionary and advisory books in one view, with automated rebalancing and house-format client reporting
- Family offices consolidating equities, property, private equity and alternatives across multiple custodians and generations
- Private equity and venture capital firms tracking deal flow, portfolio company performance, and investor reporting, with deal-waterfall logic built in
- Pension and insurance teams handling scheme-specific compliance, asset-liability matching and member communications
- Property investors and developers running valuations, rental income analytics and stage-gated development cost accounting
- Charitable foundations managing grant allocation, endowment performance and impact measurement
- Corporate treasury teams tracking cash positions, debt and investments across siloed banking and accounting systems
- Professional services and construction firms managing a project portfolio where resourcing and budget data need to tie back to the GL
Each build is adapted to the regulations, reporting standards and workflow quirks of the sector. If a sensible off-the-shelf option would serve you better, we’ll say so before you spend anything.
Common Questions About Custom Portfolio Management Systems
How does a custom build compare on cost to SaaS?
A custom build is a larger payment upfront and a smaller one after. SaaS is the opposite: cheap to start, then a per-seat fee that climbs every time you hire. On a portfolio platform priced at £50 to £300 per user per month, a team of 20 to 30 can spend the equivalent of a mid-sized custom build over three to four years and own nothing at the end. The honest answer is that it depends on team size, integration count and how unusual your workflows are. We give you a real estimate against your requirements before you commit.
Do you build project portfolio systems or investment portfolio systems?
Both. "Portfolio management" covers two different jobs: tracking a portfolio of business projects (intake, prioritisation, resourcing, budget variance) and tracking a portfolio of financial assets (positions, valuations, performance, regulatory reporting). They share concepts but need very different data models. We scope which one you need early, and some clients want elements of both.
What's a realistic timeline?
A focused first release usually takes 8 to 12 weeks: portfolio dashboard, intake, budget or position tracking, reporting and permissions, plus one priority integration. Builds with custodian feeds, AIFMD or FCA reporting and a client portal run longer, typically 12 to 20 weeks. We ship a usable core first rather than holding everything back for one big launch.
Can you integrate with our existing systems?
Yes. Common connections include accounting and ERP systems (Xero, QuickBooks, Sage, NetSuite), CRMs (Salesforce, HubSpot), and market or fund data providers. Custodian and broker feeds are the harder part: many UK custodians still rely on scheduled file drops rather than modern APIs, and data providers enforce strict rate limits. We plan for that rather than assuming a clean API exists.
What about data security, FCA rules and GDPR?
For regulated firms we design audit logging, role-based access and reporting around the obligations that apply to you: FCA systems-and-controls expectations, personal account dealing oversight, MiFID II transaction reporting, AIFMD investor reporting where relevant, and UK GDPR. Audit trails and retention (commonly five to seven years) are built in from the first design pass, because retrofitting them later is expensive. We can host data in UK data centres where residency matters.
What happens to the system after launch?
You own the code and the data. We offer support arrangements ranging from ad-hoc fixes to scheduled enhancement work, and we train both administrators and end users with documentation to match. Because there is no vendor roadmap to wait on, new asset classes, reports or compliance changes get built when you need them.