Is Finxact or Postgres better?

Neither clearly leads. Finxact starts at On request and Postgres at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Finxact or Postgres?

Postgres has a free tier; the other does not. Paid plans start at On request for Finxact and Free for Postgres.

Does Finxact or Postgres run on more platforms?

Finxact runs on Web, API, Cloud. Postgres runs on Linux, Windows, Macos, Docker.

Can I use Postgres for free?

Yes. Postgres has a free tier, so you can try it without paying. Finxact starts at On request.

What is Finxact best used for?

Finxact is most often used for a united states regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challenger, a community bank launching an embedded banking or sponsor bank programme on modern rails, an institution already running fiserv card and payment services that wants the core on the same vendor relationship, a bank standing up a new digital brand on a clean core while leaving the existing back book in place. Of those, a united states regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challenger and a community bank launching an embedded banking or sponsor bank programme on modern rails are not what Postgres is typically brought in for.

What can Finxact do that Postgres cannot?

Finxact covers Cloud native core, Real time posting, Configurable product definitions, Fiserv ecosystem access. Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers.

Technology · head to head

Finxact vs Postgres

Finxact

Technology

Cloud native core banking, sold as Finxact from Fiserv since the 2022 acquisition

From: On request
Rated: -

Full review Website

Postgres

Technology

The world's most advanced open source database

From: Free
Rated: -

Full review Website

The short version

Only Postgres has a free tier, so it costs nothing to try first.
Each has a real cost: Finxact fiserv sells several core platforms, so a buyer should demand written investment and support commitments for Finxact specifically rather than trusting that the surviving brand implies a protected roadmap.; Postgres each major version is supported for only 5 years after its initial release, after which it is end-of-life
They diverge on capability: Finxact covers Cloud native core, Postgres covers ACID compliance.
Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Finxact and Postgres actually diverge.

Attributes where Finxact and Postgres differ
Attribute	Finxact	Postgres
Starting price	On request	Free
Pricing model	quote	open-source
Free tier	No	Yes
Platforms	Web, API, Cloud	Linux, Windows, Macos, Docker
Founded	Unknown	1996

Identical on both: user rating (Not yet rated), category (Technology).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Finxact

Cloud native core
Real time posting
Configurable product definitions
Fiserv ecosystem access
Embedded banking support
Open API model
Multi tenant deployment
Regulatory reporting hooks

Only in Postgres

ACID compliance
Complex queries
Foreign keys
Triggers
Views
Stored procedures
JSON/JSONB support
Full-text search

What people use each for

The jobs each tool is most often brought in to do.

Finxact

A United States regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challengernot Postgres
A community bank launching an embedded banking or sponsor bank programme on modern railsnot Postgres
An institution already running Fiserv card and payment services that wants the core on the same vendor relationshipnot Postgres
A bank standing up a new digital brand on a clean core while leaving the existing back book in placenot Postgres

Postgres

Running a general purpose relational database for applicationsnot Finxact
Self-hosting an open source SQL database with no licence feenot Finxact
Workloads needing extensions, JSON and full text search in one enginenot Finxact

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Finxact

Fiserv sells several core platforms, so a buyer should demand written investment and support commitments for Finxact specifically rather than trusting that the surviving brand implies a protected roadmap.
Core migration is a multi year programme where the licence is a small share of total cost against integration, data migration and parallel running.
Buying the core from Fiserv strengthens a relationship that already covers cards and payments, which weakens your negotiating position across the whole estate at renewal.
It is a United States product with United States regulatory and product assumptions, so international banks get little from it.
Being part of a very large vendor changes the service experience: the responsiveness that made Finxact attractive as a startup is not guaranteed inside a company of Fiserv's scale.

Postgres

Each major version is supported for only 5 years after its initial release, after which it is end-of-life
Major version upgrades break on-disk compatibility and require a full dump and reload or the pg_upgrade tool
New major versions ship about once a year, so staying supported means a disruptive upgrade cycle
Minor releases contain only frequently-encountered bug fixes, low-risk fixes, security issues and data corruption fixes, so feature gaps are not addressed within a major version
There is no vendor SLA; commercial support must be bought separately from third party professional services listed by the project

Pricing, plan by plan

Finxact

On request

Finxact from Fiserv$undefined/year
- Quoted per institution, commonly on accounts or asset size
- Implementation and integration costs typically exceed the licence fee
- Bundled commercially with other Fiserv services in many deals

Postgres

Free

Community EditionFree
- Full database features
- No limitations
- Community support

Which should you pick?

Choose Finxact if

You need cloud native core.
You work on Web, API, Cloud.
You also want real time posting.

Finxact review

Choose Postgres if

You need acid compliance.
You want to start without paying.
You work on Linux, Windows, Macos, Docker.
You also want complex queries.

Postgres review

Questions people ask

Is Finxact or Postgres better?: Neither clearly leads. Finxact starts at On request and Postgres at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Finxact or Postgres?: Postgres has a free tier; the other does not. Paid plans start at On request for Finxact and Free for Postgres.
Does Finxact or Postgres run on more platforms?: Finxact runs on Web, API, Cloud. Postgres runs on Linux, Windows, Macos, Docker.
Can I use Postgres for free?: Yes. Postgres has a free tier, so you can try it without paying. Finxact starts at On request.
What is Finxact best used for?: Finxact is most often used for a united states regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challenger, a community bank launching an embedded banking or sponsor bank programme on modern rails, an institution already running fiserv card and payment services that wants the core on the same vendor relationship, a bank standing up a new digital brand on a clean core while leaving the existing back book in place. Of those, a united states regional bank replacing a legacy core but unwilling to take supplier viability risk on an independent challenger and a community bank launching an embedded banking or sponsor bank programme on modern rails are not what Postgres is typically brought in for.
What can Finxact do that Postgres cannot?: Finxact covers Cloud native core, Real time posting, Configurable product definitions, Fiserv ecosystem access. Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers.

Answered from the vendors’ own pages

Finxact: Is Finxact still sold under its own name?

Yes. Fiserv acquired it in 2022 and continues to market it as Finxact from Fiserv, winning named core deals with it.

Postgres: How much does PostgreSQL cost to use?

PostgreSQL is completely free to download, install, and use. No licensing fees, subscription costs, or per-seat charges apply. The database is open source under the PostgreSQL License. Source: https://www.postgresql.org

Source

Finxact: Is it genuinely cloud native?

Yes, API first with real time posting on public cloud, rather than a hosted version of a legacy core.

Postgres: Are there commercial PostgreSQL support options available?

Official PostgreSQL (the project) is free. Commercial PostgreSQL services such as hosting, professional support, training, and managed database services are offered by third-party vendors, not the PostgreSQL project itself. Source: https://www.postgresql.org

Source

Finxact: How long is a migration?

Plan in years. Even a focused deployment is a multi year programme once integration and data migration are counted.

Postgres: Do I need a license to use PostgreSQL commercially?

No. PostgreSQL is open source under the PostgreSQL License, which permits free commercial use without royalties, licensing fees, or support obligations. Source: https://www.postgresql.org

Source

Finxact vs Postgres

Finxact

Postgres

The short version

Where they differ

What each one covers

Only in Finxact

Only in Postgres

What people use each for

Finxact

Postgres

Where each one falls short

Finxact

Postgres

Pricing, plan by plan

Finxact

Postgres

Which should you pick?

Choose Finxact if

Choose Postgres if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Finxact

More on Postgres

Keep looking

Other head to heads