Billing
235 items from kdeldycke/awesome-billing ★1,354
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Plain text accounting tools plaintextaccounting.org
Extensive list of open-source personal finance projects that might be great to look into for inspiration on double-entry accounting and bookkeeping.
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More than 600 million users installed Android 'fleeceware' apps from the Play Store zdnet.com
A new kind of fraud, in which apps silently keep charging users after the end of the trial period.
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Billed for ¥21,120, invoiced at ¥2,112,000 and paid ¥2,112,000 xunroll.com
Get rid of integers and floats for monetary values. Use decimals. Or face the risks of anomalous x100 charges.
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source x.com
) - Or why you're likely to get an endless stream of complaining users if choosing utility pricing scheme: while accurate to the (milli-)cent, this model is frustrating for customers not ready to invest time grasping the underlying concepts.
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Why was I charged? wpchrg.wordpress.com
Under a constant stream of user complaints about payments, WordPress created a dedicated subdomains to help customers understand unexpected transactions. The trick was to add this URL directly in the bank statement.
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The untold story of Stripe wired.co.uk
In which we learn that “once turnover hit a certain level, Paypal automatically put the business on a 21 to 60 day rolling reserve, meaning that up to 30 per cent of a company's revenue could be locked up for up to two months.”
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Socially Optimal Pricing of Cloud Computing Resources webee.technion.ac.il
“The socially optimal operating point is unique, and can be sustained by a linear, usage-based tariff, which charges a fixed price per unit resource and unit time.” This paper justify usage-based pricing for cloud resources.
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The Challenges of Operating a Computing Cloud and Charging for its Use web.stanford.edu
Skip the first 90% of this presentation by an AWS VP (which is about general system reliability). The last four slides are a good summary of what billing cloud services entails, especially the use of soft quotas to limit fraud.
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Avoiding Double Payments in a Distributed Payments System web.archive.org
RDBMS were build for banks around transactions to solve that specific issue. Then NoSQL came forcing us to carefully implement systems to avoid double spending.
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The Double-Entry Counting Method web.archive.org
Same premise as above, but way more detailed and complete, as it adds reporting and implementation details.
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How to correctly setup SaaS subscriptions to charge VAT in Europe web.archive.org
“If you think you can just setup a simple Stripe integration and move on, like us, you'd be sadly mistaken.”
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Finding the max revenue price mark for digital products web.archive.org
“To find the optimal price that provides maximum revenue for your product you will need to field-test several price points; you then reconstruct the revenue curve and find the peak.”
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You're all calculating churn rates wrong web.archive.org
“On the surface, churn rate may seem like a natural proxy for changes in customer lifetimes. Let's dig into why that is not true.” Churn rate is not a meaningful metric to compute CLV: during the customer lifetime, the churn probability is not constant. Most of the time because…
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Content of EU invoices web.archive.org
The information required on a EU invoice is detailed by Article 226, Section 4 (Content of invoices) of Council Directive 2006/112/EC on the common system of VAT.
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The 5 Pillars of PriceOps web.archive.org
A manifesto inspired by the DevOps movement in which pricing is no longer ossified, but is practiced as a responsive iteration process, and implemented as a flexible property of the system.
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Digital signatures: how Sleek leverages Cloud HSM to guarantee the integrity of legal documents web.archive.org
Here is a great way to rely on GCP's HSM to digitally sign documents and provide an immutable audit-trail. Might be applied to invoices as well as contract agreements.
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Why not use Double or Float to represent currency? web.archive.org
Because of precision: floats and doubles cannot accurately represent the base 10 multiples that we use for money.
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AWS reserved instances vs saving plan web.archive.org
A feature matrix of the different scheme and their average dicounts.
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2017 Tax Software Developer's Guides web.archive.org
A list of test cases for developers to test their tax code against.
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China’s Pinduoduo reports theft of online discount vouchers to police web.archive.org
The next level of fraud: “an online collective exploited a loophole on its platform to ‘steal’ tens of millions of yuan worth of discount vouchers”.
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The SaaS Financial Model You'll Actually Use web.archive.org
A complete tour of the financials of a startup, which gives you extra-context on how the metrics you produce fit into the larger picture.
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The Best Payment Gateway for Startups web.archive.org
A benchmark of top payment providers, their pricing and models.
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Transforming Financial Forecasting with Data Science and Machine Learning at Uber web.archive.org
Discusses how Uber apply data science and machine learning in their financial planning platforms.
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Five Fun Fraud Facts web.archive.org
Another tiny collection of features we can feed to a ML system to detect fraud. Comments on HN also unearthed more qualifying signals and derived geodata on the transaction.
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The Network Monetization Map: Aligning Incentives with Revenue web.archive.org
6 models of monetization relying on network effect.
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Reconcile Your Monthly GCP Invoice with BigQuery Billing Export web.archive.org
Behind the quest of this developer to track its expenses, you get a glimpse on cloud billing difficulties. While not explicitly pointed out, pricing cloud resources is hard and the result of quantization, granularity and rounding, between space, time and currencies.
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Credit Card Fraud Detection using Autoencoders in Keras web.archive.org
Tutorial on how to rely on anomaly detection to implement suspicious card transactions.
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