Billing
235 items from kdeldycke/awesome-billing ★1,354
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InvoiceGenerator github.com
🆓 Python library to generate simple invoices.
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microinvoice github.com
🆓 Fast Node.js library to generate PDF invoices with PDFKit, no headless browser required.
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{Digital,Cloud,Electronic,Online} Services VAT Rate Database github.com
🆓 Centralize applicable VAT rates on foreign online services, for each country of residence (including territorial exceptions).
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Luca github.com
🆓 YAML accounting and JSON tax forms, solo-maintained.
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StripeMeter github.com
🆓 Open-source, Stripe-native usage metering in TypeScript. Reconciles computed usage against Stripe invoices for “pre-invoice parity”, with exactly-once processing and real-time cost projections.
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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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GNUCash gnucash.org
(GTK+), Grisbi (C), Firefly III (PHP).
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RTB Budget Pacing Summarized github.com
A reading list distilling research papers from Turn Inc., Yahoo, and LinkedIn on RTB budget pacing techniques. Static resource: dated but still a useful entry point into the literature.
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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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Driving Global Fraud Losses Down While Empowering Business Growth youtube.com
In this talk by Uber Eats, we learn from the biggest payment processor that “growing businesses with declining loss rates is extremely rare in the industry”. Also, fraud can takes several forms: chargebacks on non-perishable goods, promo abuse, refunds…
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Jeremy Howard - From Predictive Modelling to Optimization youtube.com
“In insurance, the price is the product. (…) How do I change price to make shitload of money?” Or how to deliver results (optimal price for a customer) instead of delivering data (calculating a customer's risk, which had been the standard approach used by actuaries previously).
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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
)
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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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part 1 web.archive.org
, part 2, part 3, part 4, part 5.
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AI vs Data Science vs Data Engineering web.archive.org
“Data Engineers build data pipelines and infrastructure to ensure a constant availability of transformed data. Data Scientists analyze and build models from these data to develop new product features or drive the bottom line of the business.” As for AI professionals, their…
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Present or Future: Optimal Pricing for Spot Instances web.archive.org
“Pricing policy of spot resources should be carefully designed and the impact on both present and future should be considered.”
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The long, long history of long, long CVS receipts vox.com
“CVS is a drugstore much like other drugstores, with one important difference: The receipts are very long.”
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We tried to make billing backendless useautumn.com
Failed attempt to move the billing experience by from backend to frontend because of security.
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Survival Analysis For Customer Retention two-wrongs.com
Illustrates how retention can be better modelled using a survival function like Kaplan–Meier survival curves.
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A Quantitative Approach to Product Market Fit tribecap.co
Metrics produced above have a greater reach, as they're used as important signals to validate product-market fit.
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Churn Prediction towardsdatascience.com
“How to use Python in a simplistic way to fuel your company's growth by applying the predictive approach to all your actions.” Relies on XGBoost binary classification.
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The Three Part Tariff tomtunguz.com
Beyond linear pricing, there is a place for additional platform fees and free-tiers in the pricing structure.
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The 7 factors to consider when pricing your startup product tomtunguz.com
Pricing is an offensive tool to reinforce your product value and underscore the company core marketing message.
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Is this what Enterprise mean? threadreaderapp.com
When contracts, invoicing and payments are not working together, you end up alienating your big enterprise customers. See the associated HN comments on bulk license purchase.
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Training an ML model to score chargebacks threadreaderapp.com
An example of a platform's network effect, which allows to predict the likelihood of winning a dispute.
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How to save money on your AWS bill threadreaderapp.com
“The biggest cost savings there are: 1. Turning things off that you're not using; 2. Then spot instances; 3. Then reserved instances.”
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